Support Component Actions in the toolbar.

chrome/browser/ui/toolbar/toolbar_actions_model_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/files/file_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/api/extension_action/extension_action_api.h"
 #include "chrome/browser/extensions/extension_action_manager.h"
 #include "chrome/browser/extensions/extension_action_test_util.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_service_test_base.h"
-#include "chrome/browser/extensions/extension_toolbar_model.h"
 #include "chrome/browser/extensions/extension_util.h"
 #include "chrome/browser/extensions/test_extension_dir.h"
 #include "chrome/browser/extensions/test_extension_system.h"
 #include "chrome/browser/extensions/unpacked_installer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "chrome/browser/ui/extensions/extension_toolbar_icon_surfacing_bubble_delegate.h"
+#include "chrome/browser/ui/toolbar/component_toolbar_actions_factory.h"
+#include "chrome/browser/ui/toolbar/mock_component_toolbar_actions_factory.h"
+#include "chrome/browser/ui/toolbar/test_toolbar_action_view_controller.h"
+#include "chrome/browser/ui/toolbar/toolbar_actions_model.h"
 #include "chrome/common/extensions/api/extension_action/action_info.h"
 #include "components/crx_file/id_util.h"
 #include "content/public/test/test_renderer_host.h"
 #include "content/public/test/web_contents_tester.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/pref_names.h"
 #include "extensions/browser/test_extension_registry_observer.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_builder.h"
 #include "extensions/common/feature_switch.h"
 #include "extensions/common/value_builder.h"
 
-namespace extensions {
-
 namespace {
 
 // A simple observer that tracks the number of times certain events occur.
-class ExtensionToolbarModelTestObserver
-    : public ExtensionToolbarModel::Observer {
+class ToolbarActionsModelTestObserver
+    : public ToolbarActionsModel::Observer {
  public:
-  explicit ExtensionToolbarModelTestObserver(ExtensionToolbarModel* model);
-  ~ExtensionToolbarModelTestObserver() override;
+  explicit ToolbarActionsModelTestObserver(ToolbarActionsModel* model);
+  ~ToolbarActionsModelTestObserver() override;
 
   size_t inserted_count() const { return inserted_count_; }
   size_t removed_count() const { return removed_count_; }
   size_t moved_count() const { return moved_count_; }
   int highlight_mode_count() const { return highlight_mode_count_; }
   size_t initialized_count() const { return initialized_count_; }
 
  private:
-  // ExtensionToolbarModel::Observer:
-  void OnToolbarExtensionAdded(const Extension* extension, int index) override {
+  // ToolbarActionsModel::Observer:
+  void OnToolbarActionAdded(const std::string& id, int index) override {
     ++inserted_count_;
   }
 
-  void OnToolbarExtensionRemoved(const Extension* extension) override {
+  void OnToolbarActionRemoved(const std::string& id) override {
     ++removed_count_;
   }
 
-  void OnToolbarExtensionMoved(const Extension* extension, int index) override {
+  void OnToolbarActionMoved(const std::string& id, int index) override {
     ++moved_count_;
   }
 
-  void OnToolbarExtensionUpdated(const Extension* extension) override {}
+  void OnToolbarActionUpdated(const std::string& id) override {}
 
-  bool ShowExtensionActionPopup(const Extension* extension,
-                                bool grant_active_tab) override {
+  bool ShowToolbarActionPopup(const std::string& id,
+                              bool grant_active_tab) override {
     return false;
   }
 
   void OnToolbarVisibleCountChanged() override {}
 
   void OnToolbarHighlightModeChanged(bool is_highlighting) override {
     // Add one if highlighting, subtract one if not.
     highlight_mode_count_ += is_highlighting ? 1 : -1;
   }
 
   void OnToolbarModelInitialized() override { ++initialized_count_; }
 
   Browser* GetBrowser() override { return NULL; }
 
-  ExtensionToolbarModel* model_;
+  ToolbarActionsModel* model_;
 
   size_t inserted_count_;
   size_t removed_count_;
   size_t moved_count_;
   // Int because it could become negative (if something goes wrong).
   int highlight_mode_count_;
   size_t initialized_count_;
 
-  DISALLOW_COPY_AND_ASSIGN(ExtensionToolbarModelTestObserver);
+  DISALLOW_COPY_AND_ASSIGN(ToolbarActionsModelTestObserver);
 };
 
-ExtensionToolbarModelTestObserver::ExtensionToolbarModelTestObserver(
-    ExtensionToolbarModel* model) : model_(model),
-                                    inserted_count_(0),
-                                    removed_count_(0),
-                                    moved_count_(0),
-                                    highlight_mode_count_(0),
-                                    initialized_count_(0) {
+ToolbarActionsModelTestObserver::ToolbarActionsModelTestObserver(
+    ToolbarActionsModel* model) : model_(model),
+                                  inserted_count_(0),
+                                  removed_count_(0),
+                                  moved_count_(0),
+                                  highlight_mode_count_(0),
+                                  initialized_count_(0) {
   model_->AddObserver(this);
 }
 
-ExtensionToolbarModelTestObserver::~ExtensionToolbarModelTestObserver() {
+ToolbarActionsModelTestObserver::~ToolbarActionsModelTestObserver() {
   model_->RemoveObserver(this);
 }
 
 }  // namespace
 
-class ExtensionToolbarModelUnitTest : public ExtensionServiceTestBase {
+class ToolbarActionsModelUnitTest :
+    public extensions::ExtensionServiceTestBase {
+ public:
+  ToolbarActionsModelUnitTest() {};
+  ~ToolbarActionsModelUnitTest() override {};
  protected:
-  // Initialize the ExtensionService, ExtensionToolbarModel, and
+  // Initialize the ExtensionService, ToolbarActionsModel, and
   // ExtensionSystem.
   void Init();
 
   void TearDown() override;
 
   // Adds or removes the given |extension| and verify success.
   testing::AssertionResult AddExtension(
-      const scoped_refptr<const Extension>& extension) WARN_UNUSED_RESULT;
+      const scoped_refptr<const extensions::Extension>& extension)
+          WARN_UNUSED_RESULT;
   testing::AssertionResult RemoveExtension(
-      const scoped_refptr<const Extension>& extension) WARN_UNUSED_RESULT;
+      const scoped_refptr<const extensions::Extension>& extension)
+          WARN_UNUSED_RESULT;
 
   // Adds three extensions, all with browser actions.
   testing::AssertionResult AddBrowserActionExtensions() WARN_UNUSED_RESULT;
 
   // Adds three extensions, one each for browser action, page action, and no
   // action, and are added in that order.
   testing::AssertionResult AddActionExtensions() WARN_UNUSED_RESULT;
 
-  // Returns the extension at the given index in the toolbar model, or NULL
-  // if one does not exist.
+  // Returns the action at the given index in the toolbar model, or NULL if one
+  // does not exist.
   // If |model| is specified, it is used. Otherwise, this defaults to
   // |toolbar_model_|.
-  const Extension* GetExtensionAtIndex(
-      size_t index, const ExtensionToolbarModel* model) const;
-  const Extension* GetExtensionAtIndex(size_t index) const;
+  const std::string GetActionIdAtIndex(size_t index,
+                                       const ToolbarActionsModel* model) const;
+  const std::string GetActionIdAtIndex(size_t index) const;
 
-  ExtensionToolbarModel* toolbar_model() { return toolbar_model_; }
+  ToolbarActionsModel* toolbar_model() { return toolbar_model_; }
 
-  const ExtensionToolbarModelTestObserver* observer() const {
+  const ToolbarActionsModelTestObserver* observer() const {
     return model_observer_.get();
   }
   size_t num_toolbar_items() const {
     return toolbar_model_->toolbar_items().size();
   }
-  const Extension* browser_action_a() const { return browser_action_a_.get(); }
-  const Extension* browser_action_b() const { return browser_action_b_.get(); }
-  const Extension* browser_action_c() const { return browser_action_c_.get(); }
-  const Extension* browser_action() const {
+  const extensions::Extension* browser_action_a() const {
+    return browser_action_a_.get();
+  }
+  const extensions::Extension* browser_action_b() const {
+    return browser_action_b_.get();
+  }
+  const extensions::Extension* browser_action_c() const {
+    return browser_action_c_.get();
+  }
+  const extensions::Extension* browser_action() const {
     return browser_action_extension_.get();
   }
-  const Extension* page_action() const { return page_action_extension_.get(); }
-  const Extension* no_action() const { return no_action_extension_.get(); }
+  const extensions::Extension* page_action() const {
+    return page_action_extension_.get();
+  }
+  const extensions::Extension* no_action() const {
+    return no_action_extension_.get();
+  }
+
+  // The mock component action will be referred to as "MCA" below.
+  const std::string& component_action_id() {
+    return mock_action_id_;
+  }
 
  private:
   // Verifies that all extensions in |extensions| are added successfully.
   testing::AssertionResult AddAndVerifyExtensions(
-      const ExtensionList& extensions);
+      const extensions::ExtensionList& extensions);
 
   // The toolbar model associated with the testing profile.
-  ExtensionToolbarModel* toolbar_model_;
+  ToolbarActionsModel* toolbar_model_;
+
+  std::string mock_action_id_;
 
   // The test observer to track events. Must come after toolbar_model_ so that
   // it is destroyed and removes itself as an observer first.
-  scoped_ptr<ExtensionToolbarModelTestObserver> model_observer_;
+  scoped_ptr<ToolbarActionsModelTestObserver> model_observer_;
 
   // Sample extensions with only browser actions.
-  scoped_refptr<const Extension> browser_action_a_;
-  scoped_refptr<const Extension> browser_action_b_;
-  scoped_refptr<const Extension> browser_action_c_;
+  scoped_refptr<const extensions::Extension> browser_action_a_;
+  scoped_refptr<const extensions::Extension> browser_action_b_;
+  scoped_refptr<const extensions::Extension> browser_action_c_;
 
   // Sample extensions with different kinds of actions.
-  scoped_refptr<const Extension> browser_action_extension_;
-  scoped_refptr<const Extension> page_action_extension_;
-  scoped_refptr<const Extension> no_action_extension_;
+  scoped_refptr<const extensions::Extension> browser_action_extension_;
+  scoped_refptr<const extensions::Extension> page_action_extension_;
+  scoped_refptr<const extensions::Extension> no_action_extension_;
+
+  scoped_ptr<MockComponentToolbarActionsFactory> mock_actions_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ToolbarActionsModelUnitTest);
 };
 
-void ExtensionToolbarModelUnitTest::Init() {
+void ToolbarActionsModelUnitTest::Init() {
   InitializeEmptyExtensionService();
+  mock_actions_factory_.reset(new MockComponentToolbarActionsFactory(NULL));
   toolbar_model_ =
-      extension_action_test_util::CreateToolbarModelForProfile(profile());
-  model_observer_.reset(new ExtensionToolbarModelTestObserver(toolbar_model_));
+      extensions::extension_action_test_util::CreateToolbarModelForProfile(
+          profile());
+  model_observer_.reset(new ToolbarActionsModelTestObserver(toolbar_model_));
+  mock_action_id_ = ComponentToolbarActionsFactory::kActionIdForTesting;
 }
 
-void ExtensionToolbarModelUnitTest::TearDown() {
+void ToolbarActionsModelUnitTest::TearDown() {
   model_observer_.reset();
-  ExtensionServiceTestBase::TearDown();
+  extensions::ExtensionServiceTestBase::TearDown();
 }
 
-testing::AssertionResult ExtensionToolbarModelUnitTest::AddExtension(
-    const scoped_refptr<const Extension>& extension) {
+testing::AssertionResult ToolbarActionsModelUnitTest::AddExtension(
+    const scoped_refptr<const extensions::Extension>& extension) {
   if (registry()->enabled_extensions().GetByID(extension->id())) {
     return testing::AssertionFailure() << "Extension " << extension->name() <<
         " already installed!";
   }
   service()->AddExtension(extension.get());
   if (!registry()->enabled_extensions().GetByID(extension->id())) {
     return testing::AssertionFailure() << "Failed to install extension: " <<
         extension->name();
   }
   return testing::AssertionSuccess();
 }
 
-testing::AssertionResult ExtensionToolbarModelUnitTest::RemoveExtension(
-    const scoped_refptr<const Extension>& extension) {
+testing::AssertionResult ToolbarActionsModelUnitTest::RemoveExtension(
+    const scoped_refptr<const extensions::Extension>& extension) {
   if (!registry()->enabled_extensions().GetByID(extension->id())) {
     return testing::AssertionFailure() << "Extension " << extension->name() <<
         " not installed!";
   }
   service()->UnloadExtension(extension->id(),
-                             UnloadedExtensionInfo::REASON_DISABLE);
+                             extensions::UnloadedExtensionInfo::REASON_DISABLE);
   if (registry()->enabled_extensions().GetByID(extension->id())) {
     return testing::AssertionFailure() << "Failed to unload extension: " <<
         extension->name();
   }
   return testing::AssertionSuccess();
 }
 
-testing::AssertionResult ExtensionToolbarModelUnitTest::AddActionExtensions() {
-  browser_action_extension_ = extension_action_test_util::CreateActionExtension(
-      "browser_action", extension_action_test_util::BROWSER_ACTION);
-  page_action_extension_ = extension_action_test_util::CreateActionExtension(
-      "page_action", extension_action_test_util::PAGE_ACTION);
-  no_action_extension_ = extension_action_test_util::CreateActionExtension(
-      "no_action", extension_action_test_util::NO_ACTION);
+testing::AssertionResult ToolbarActionsModelUnitTest::AddActionExtensions() {
+  browser_action_extension_ =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "browser_action",
+              extensions::extension_action_test_util::BROWSER_ACTION);
+  page_action_extension_ =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "page_action",
+              extensions::extension_action_test_util::PAGE_ACTION);
+  no_action_extension_ =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "no_action",
+              extensions::extension_action_test_util::NO_ACTION);
 
-  ExtensionList extensions;
+  extensions::ExtensionList extensions;
   extensions.push_back(browser_action_extension_);
   extensions.push_back(page_action_extension_);
   extensions.push_back(no_action_extension_);
 
   return AddAndVerifyExtensions(extensions);
 }
 
 testing::AssertionResult
-ExtensionToolbarModelUnitTest::AddBrowserActionExtensions() {
-  browser_action_a_ = extension_action_test_util::CreateActionExtension(
-      "browser_actionA", extension_action_test_util::BROWSER_ACTION);
-  browser_action_b_ = extension_action_test_util::CreateActionExtension(
-      "browser_actionB", extension_action_test_util::BROWSER_ACTION);
-  browser_action_c_ = extension_action_test_util::CreateActionExtension(
-      "browser_actionC", extension_action_test_util::BROWSER_ACTION);
+ToolbarActionsModelUnitTest::AddBrowserActionExtensions() {
+  browser_action_a_ =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "browser_actionA",
+              extensions::extension_action_test_util::BROWSER_ACTION);
+  browser_action_b_ =
+          extensions::extension_action_test_util::CreateActionExtension(
+          "browser_actionB",
+              extensions::extension_action_test_util::BROWSER_ACTION);
+  browser_action_c_ =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "browser_actionC",
+              extensions::extension_action_test_util::BROWSER_ACTION);
 
-  ExtensionList extensions;
+  extensions::ExtensionList extensions;
   extensions.push_back(browser_action_a_);
   extensions.push_back(browser_action_b_);
   extensions.push_back(browser_action_c_);
 
   return AddAndVerifyExtensions(extensions);
 }
 
-const Extension* ExtensionToolbarModelUnitTest::GetExtensionAtIndex(
-    size_t index, const ExtensionToolbarModel* model) const {
+const std::string ToolbarActionsModelUnitTest::GetActionIdAtIndex(
+    size_t index, const ToolbarActionsModel* model) const {
   return index < model->toolbar_items().size()
-             ? model->toolbar_items()[index].get()
-             : NULL;
+             ? model->toolbar_items()[index]
+             : std::string();
 }
 
-const Extension* ExtensionToolbarModelUnitTest::GetExtensionAtIndex(
+const std::string ToolbarActionsModelUnitTest::GetActionIdAtIndex(
     size_t index) const {
-  return GetExtensionAtIndex(index, toolbar_model_);
+  return GetActionIdAtIndex(index, toolbar_model_);
 }
 
-testing::AssertionResult ExtensionToolbarModelUnitTest::AddAndVerifyExtensions(
-    const ExtensionList& extensions) {
-  for (ExtensionList::const_iterator iter = extensions.begin();
+testing::AssertionResult ToolbarActionsModelUnitTest::AddAndVerifyExtensions(
+    const extensions::ExtensionList& extensions) {
+  for (extensions::ExtensionList::const_iterator iter = extensions.begin();
        iter != extensions.end(); ++iter) {
     if (!AddExtension(*iter)) {
       return testing::AssertionFailure() << "Failed to install extension: " <<
           (*iter)->name();
     }
   }
   return testing::AssertionSuccess();
 }
 
-// A basic test for extensions with browser actions showing up in the toolbar.
-TEST_F(ExtensionToolbarModelUnitTest, BasicExtensionToolbarModelTest) {
+// A basic test for component actions and extensions with browser actions
+// showing up in the toolbar.
+TEST_F(ToolbarActionsModelUnitTest, BasicToolbarActionsModelTest) {
   Init();
 
   // Load an extension with no browser action.
-  scoped_refptr<const Extension> extension1 =
-      extension_action_test_util::CreateActionExtension(
-          "no_action", extension_action_test_util::NO_ACTION);
+  scoped_refptr<const extensions::Extension> extension1 =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "no_action", extensions::extension_action_test_util::NO_ACTION);
   ASSERT_TRUE(AddExtension(extension1));
 
   // This extension should not be in the model (has no browser action).
   EXPECT_EQ(0u, observer()->inserted_count());
   EXPECT_EQ(0u, num_toolbar_items());
-  EXPECT_EQ(NULL, GetExtensionAtIndex(0u));
+  EXPECT_EQ("", GetActionIdAtIndex(0u));
 
   // Load an extension with a browser action.
-  scoped_refptr<const Extension> extension2 =
-      extension_action_test_util::CreateActionExtension(
-          "browser_action", extension_action_test_util::BROWSER_ACTION);
+  scoped_refptr<const extensions::Extension> extension2 =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "browser_action",
+              extensions::extension_action_test_util::BROWSER_ACTION);
   ASSERT_TRUE(AddExtension(extension2));
 
   // We should now find our extension in the model.
   EXPECT_EQ(1u, observer()->inserted_count());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(extension2.get(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(extension2->id(), GetActionIdAtIndex(0u));
 
   // Should be a no-op, but still fires the events.
-  toolbar_model()->MoveExtensionIcon(extension2->id(), 0);
+  toolbar_model()->MoveActionIcon(extension2->id(), 0);
   EXPECT_EQ(1u, observer()->moved_count());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(extension2.get(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(extension2->id(), GetActionIdAtIndex(0u));
 
   // Remove the extension and verify.
   ASSERT_TRUE(RemoveExtension(extension2));
   EXPECT_EQ(1u, observer()->removed_count());
   EXPECT_EQ(0u, num_toolbar_items());
-  EXPECT_EQ(NULL, GetExtensionAtIndex(0u));
+  EXPECT_EQ("", GetActionIdAtIndex(0u));
 }
 
 // Test various different reorderings, removals, and reinsertions.
-TEST_F(ExtensionToolbarModelUnitTest, ExtensionToolbarReorderAndReinsert) {
+TEST_F(ToolbarActionsModelUnitTest, ActionsToolbarReorderAndReinsert) {
   Init();
 
   // Add the three browser action extensions.
   ASSERT_TRUE(AddBrowserActionExtensions());
 
-  // Verify the three extensions are in the model in the proper order.
+  // Verify the three actions are in the model in the proper order.
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
 
   // Order is now A, B, C. Let's put C first.
-  toolbar_model()->MoveExtensionIcon(browser_action_c()->id(), 0);
+  toolbar_model()->MoveActionIcon(browser_action_c()->id(), 0);
   EXPECT_EQ(1u, observer()->moved_count());
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(2u));
 
   // Order is now C, A, B. Let's put A last.
-  toolbar_model()->MoveExtensionIcon(browser_action_a()->id(), 2);
+  toolbar_model()->MoveActionIcon(browser_action_a()->id(), 2);
   EXPECT_EQ(2u, observer()->moved_count());
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(2u));
 
   // Order is now C, B, A. Let's remove B.
   ASSERT_TRUE(RemoveExtension(browser_action_b()));
   EXPECT_EQ(1u, observer()->removed_count());
   EXPECT_EQ(2u, num_toolbar_items());
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(1u));
 
   // Load extension B again.
   ASSERT_TRUE(AddExtension(browser_action_b()));
 
   // Extension B loaded again.
   EXPECT_EQ(4u, observer()->inserted_count());
   EXPECT_EQ(3u, num_toolbar_items());
   // Make sure it gets its old spot in the list.
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
 
   // Unload B again.
   ASSERT_TRUE(RemoveExtension(browser_action_b()));
   EXPECT_EQ(2u, observer()->removed_count());
   EXPECT_EQ(2u, num_toolbar_items());
 
   // Order is now C, A. Flip it.
-  toolbar_model()->MoveExtensionIcon(browser_action_a()->id(), 0);
+  toolbar_model()->MoveActionIcon(browser_action_a()->id(), 0);
   EXPECT_EQ(3u, observer()->moved_count());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(1u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(1u));
 
   // Move A to the location it already occupies.
-  toolbar_model()->MoveExtensionIcon(browser_action_a()->id(), 0);
+  toolbar_model()->MoveActionIcon(browser_action_a()->id(), 0);
   EXPECT_EQ(4u, observer()->moved_count());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(1u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(1u));
 
-  // Order is now A, C. Remove C.
+  // Order is now A, C.
   ASSERT_TRUE(RemoveExtension(browser_action_c()));
   EXPECT_EQ(3u, observer()->removed_count());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
 
   // Load extension C again.
   ASSERT_TRUE(AddExtension(browser_action_c()));
 
   // Extension C loaded again.
   EXPECT_EQ(5u, observer()->inserted_count());
   EXPECT_EQ(2u, num_toolbar_items());
   // Make sure it gets its old spot in the list (at the very end).
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(1u));
 }
 
 // Test that order persists after unloading and disabling, but not across
 // uninstallation.
-TEST_F(ExtensionToolbarModelUnitTest,
-       ExtensionToolbarUnloadDisableAndUninstall) {
+TEST_F(ToolbarActionsModelUnitTest,
+       ActionsToolbarUnloadDisableAndUninstall) {
   Init();
 
   // Add the three browser action extensions.
   ASSERT_TRUE(AddBrowserActionExtensions());
 
-  // Verify the three extensions are in the model in the proper order: A, B, C.
+  // Verify the three actions are in the model in the proper order: A, B, C.
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
 
   // Unload B, then C, then A, and then reload C, then A, then B.
   ASSERT_TRUE(RemoveExtension(browser_action_b()));
   ASSERT_TRUE(RemoveExtension(browser_action_c()));
   ASSERT_TRUE(RemoveExtension(browser_action_a()));
-  EXPECT_EQ(0u, num_toolbar_items());  // Sanity check: all gone?
+  EXPECT_EQ(0u, num_toolbar_items()); // Sanity check: all gone?
   ASSERT_TRUE(AddExtension(browser_action_c()));
   ASSERT_TRUE(AddExtension(browser_action_a()));
   ASSERT_TRUE(AddExtension(browser_action_b()));
   EXPECT_EQ(3u, num_toolbar_items());  // Sanity check: all back?
   EXPECT_EQ(0u, observer()->moved_count());
 
   // Even though we unloaded and reloaded in a different order, the original
   // order (A, B, C) should be preserved.
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
 
   // Disabling extensions should also preserve order.
   service()->DisableExtension(browser_action_b()->id(),
-                              Extension::DISABLE_USER_ACTION);
+                              extensions::Extension::DISABLE_USER_ACTION);
   service()->DisableExtension(browser_action_c()->id(),
-                              Extension::DISABLE_USER_ACTION);
+                              extensions::Extension::DISABLE_USER_ACTION);
   service()->DisableExtension(browser_action_a()->id(),
-                              Extension::DISABLE_USER_ACTION);
+                              extensions::Extension::DISABLE_USER_ACTION);
   service()->EnableExtension(browser_action_c()->id());
   service()->EnableExtension(browser_action_a()->id());
   service()->EnableExtension(browser_action_b()->id());
 
   // Make sure we still get the original A, B, C order.
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
 
   // Move browser_action_b() to be first.
-  toolbar_model()->MoveExtensionIcon(browser_action_b()->id(), 0);
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(0u));
+  toolbar_model()->MoveActionIcon(browser_action_b()->id(), 0);
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(0u));
 
   // Uninstall Extension B.
   service()->UninstallExtension(browser_action_b()->id(),
-                                UNINSTALL_REASON_FOR_TESTING,
+                                extensions::UNINSTALL_REASON_FOR_TESTING,
                                 base::Bind(&base::DoNothing),
                                 NULL);  // Ignore error.
   // List contains only A and C now. Validate that.
   EXPECT_EQ(2u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(1u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(1u));
 
   ASSERT_TRUE(AddExtension(browser_action_b()));
 
   // Make sure Extension B is _not_ first (its old position should have been
   // forgotten at uninstall time). Order should be A, C, B.
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(2u));
 }
 
-TEST_F(ExtensionToolbarModelUnitTest, ReorderOnPrefChange) {
+TEST_F(ToolbarActionsModelUnitTest, ReorderOnPrefChange) {
   Init();
 
   // Add the three browser action extensions.
   ASSERT_TRUE(AddBrowserActionExtensions());
   EXPECT_EQ(3u, num_toolbar_items());
 
   // Change the value of the toolbar preference.
-  ExtensionIdList new_order;
+  ActionIds new_order;
   new_order.push_back(browser_action_c()->id());
   new_order.push_back(browser_action_b()->id());
-  ExtensionPrefs::Get(profile())->SetToolbarOrder(new_order);
+  extensions::ExtensionPrefs::Get(profile())->SetToolbarOrder(new_order);
 
   // Verify order is changed.
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(2u));
 }
 
-// Test that new extensions are always visible on installation and inserted at
-// the "end" of the visible section.
-TEST_F(ExtensionToolbarModelUnitTest, NewToolbarExtensionsAreVisible) {
+// Test that new extension actions are always visible on installation and
+// inserted at the "end" of the visible section.
+TEST_F(ToolbarActionsModelUnitTest, NewToolbarExtensionsAreVisible) {
   Init();
 
   // Three extensions with actions.
-  scoped_refptr<const Extension> extension_a =
-      extension_action_test_util::CreateActionExtension(
-          "a", extension_action_test_util::BROWSER_ACTION);
-  scoped_refptr<const Extension> extension_b =
-      extension_action_test_util::CreateActionExtension(
-          "b", extension_action_test_util::BROWSER_ACTION);
-  scoped_refptr<const Extension> extension_c =
-      extension_action_test_util::CreateActionExtension(
-          "c", extension_action_test_util::BROWSER_ACTION);
-  scoped_refptr<const Extension> extension_d =
-      extension_action_test_util::CreateActionExtension(
-          "d", extension_action_test_util::BROWSER_ACTION);
+  scoped_refptr<const extensions::Extension> extension_a =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "a", extensions::extension_action_test_util::BROWSER_ACTION);
+  scoped_refptr<const extensions::Extension> extension_b =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "b", extensions::extension_action_test_util::BROWSER_ACTION);
+  scoped_refptr<const extensions::Extension> extension_c =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "c", extensions::extension_action_test_util::BROWSER_ACTION);
+  scoped_refptr<const extensions::Extension> extension_d =
+      extensions::extension_action_test_util::CreateActionExtension(
+          "d", extensions::extension_action_test_util::BROWSER_ACTION);
 
-  // We should start off without any extensions.
+  // We should start off without any actions.
   EXPECT_EQ(0u, num_toolbar_items());
   EXPECT_EQ(0u, toolbar_model()->visible_icon_count());
 
-  // Add one extension. It should be visible.
+  // Add one action. It should be visible.
   service()->AddExtension(extension_a.get());
   EXPECT_EQ(1u, num_toolbar_items());
   EXPECT_EQ(1u, toolbar_model()->visible_icon_count());
-  EXPECT_EQ(extension_a.get(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(extension_a.get()->id(), GetActionIdAtIndex(0u));
 
-  // Hide all extensions.
+  // Hide all actions.
   toolbar_model()->SetVisibleIconCount(0);
   EXPECT_EQ(0u, toolbar_model()->visible_icon_count());
 
-  // Add a new extension - it should be visible, so it should be in the first
-  // index. The other extension should remain hidden.
+  // Add a new action - it should be visible, so it should be in the first
+  // index. The other action should remain hidden.
   service()->AddExtension(extension_b.get());
   EXPECT_EQ(2u, num_toolbar_items());
   EXPECT_EQ(1u, toolbar_model()->visible_icon_count());
-  EXPECT_EQ(extension_b.get(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(extension_a.get(), GetExtensionAtIndex(1u));
+  EXPECT_EQ(extension_b.get()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(extension_a.get()->id(), GetActionIdAtIndex(1u));
 
-  // Show all extensions.
+  // Show all actions.
   toolbar_model()->SetVisibleIconCount(2);
   EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
   EXPECT_TRUE(toolbar_model()->all_icons_visible());
 
-  // Add the third extension. Since all extensions are visible, it should go in
-  // the last index.
+  // Add the third action. Since all action are visible, it should go in the
+  // last index.
   service()->AddExtension(extension_c.get());
   EXPECT_EQ(3u, num_toolbar_items());
   EXPECT_EQ(3u, toolbar_model()->visible_icon_count());
   EXPECT_TRUE(toolbar_model()->all_icons_visible());
-  EXPECT_EQ(extension_b.get(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(extension_a.get(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(extension_c.get(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(extension_b.get()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(extension_a.get()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(extension_c.get()->id(), GetActionIdAtIndex(2u));
 
-  // Hide one extension (two remaining visible).
+  // Hide one action (two remaining visible).
   toolbar_model()->SetVisibleIconCount(2);
   EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
 
-  // Add a fourth extension. It should go at the end of the visible section and
-  // be visible, so it increases visible count by 1, and goes into the third
-  // index. The hidden extension should remain hidden.
+  // Add a fourth action. It should go at the end of the visible section and
+  // be visible, so it increases visible count by 1, and goes into the fourth
+  // index. The hidden action should remain hidden.
   service()->AddExtension(extension_d.get());
   EXPECT_EQ(4u, num_toolbar_items());
   EXPECT_EQ(3u, toolbar_model()->visible_icon_count());
-  EXPECT_EQ(extension_b.get(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(extension_a.get(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(extension_d.get(), GetExtensionAtIndex(2u));
-  EXPECT_EQ(extension_c.get(), GetExtensionAtIndex(3u));
+  EXPECT_EQ(extension_b.get()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(extension_a.get()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(extension_d.get()->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(extension_c.get()->id(), GetActionIdAtIndex(3u));
 }
 
-TEST_F(ExtensionToolbarModelUnitTest, ExtensionToolbarHighlightMode) {
+TEST_F(ToolbarActionsModelUnitTest, ActionsToolbarHighlightMode) {
   Init();
 
-  EXPECT_FALSE(toolbar_model()->HighlightExtensions(
-      ExtensionIdList(), ExtensionToolbarModel::HIGHLIGHT_WARNING));
+  EXPECT_FALSE(toolbar_model()->HighlightActions(
+      ActionIds(), ToolbarActionsModel::HIGHLIGHT_WARNING));
   EXPECT_EQ(0, observer()->highlight_mode_count());
 
   // Add the three browser action extensions.
   ASSERT_TRUE(AddBrowserActionExtensions());
   EXPECT_EQ(3u, num_toolbar_items());
 
   // Start with a visible count of 2 (non-zero, and not all).
   toolbar_model()->SetVisibleIconCount(2u);
 
   // Highlight one extension.
-  ExtensionIdList extension_ids;
-  extension_ids.push_back(browser_action_b()->id());
-  toolbar_model()->HighlightExtensions(
-      extension_ids, ExtensionToolbarModel::HIGHLIGHT_WARNING);
+  ActionIds action_ids;
+  action_ids.push_back(browser_action_b()->id());
+  toolbar_model()->HighlightActions(
+      action_ids, ToolbarActionsModel::HIGHLIGHT_WARNING);
   EXPECT_EQ(1, observer()->highlight_mode_count());
   EXPECT_TRUE(toolbar_model()->is_highlighting());
-
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(0u));
   EXPECT_EQ(1u, toolbar_model()->visible_icon_count());
 
   // Stop highlighting.
   toolbar_model()->StopHighlighting();
   EXPECT_EQ(0, observer()->highlight_mode_count());
   EXPECT_FALSE(toolbar_model()->is_highlighting());
 
   // Verify that the extensions are back to normal.
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
   EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
 
   // Call stop highlighting a second time (shouldn't be notified).
   toolbar_model()->StopHighlighting();
   EXPECT_EQ(0, observer()->highlight_mode_count());
   EXPECT_FALSE(toolbar_model()->is_highlighting());
 
   // Highlight all extensions.
-  extension_ids.clear();
-  extension_ids.push_back(browser_action_a()->id());
-  extension_ids.push_back(browser_action_b()->id());
-  extension_ids.push_back(browser_action_c()->id());
-  toolbar_model()->HighlightExtensions(
-      extension_ids, ExtensionToolbarModel::HIGHLIGHT_WARNING);
+  action_ids.clear();
+  action_ids.push_back(browser_action_a()->id());
+  action_ids.push_back(browser_action_b()->id());
+  action_ids.push_back(browser_action_c()->id());
+  toolbar_model()->HighlightActions(
+      action_ids, ToolbarActionsModel::HIGHLIGHT_WARNING);
   EXPECT_EQ(1, observer()->highlight_mode_count());
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
   EXPECT_EQ(3u, toolbar_model()->visible_icon_count());
   // Even though the visible count is 3, we shouldn't adjust the stored
   // preference.
-  EXPECT_EQ(2, profile()->GetPrefs()->GetInteger(pref_names::kToolbarSize));
+  EXPECT_EQ(2, profile()->GetPrefs()->GetInteger(
+      extensions::pref_names::kToolbarSize));
 
-  // Highlight only extension b (shrink the highlight list).
-  extension_ids.clear();
-  extension_ids.push_back(browser_action_b()->id());
-  toolbar_model()->HighlightExtensions(
-      extension_ids, ExtensionToolbarModel::HIGHLIGHT_WARNING);
+  // Highlight only extension B (shrink the highlight list).
+  action_ids.clear();
+  action_ids.push_back(browser_action_b()->id());
+  toolbar_model()->HighlightActions(
+      action_ids, ToolbarActionsModel::HIGHLIGHT_WARNING);
   EXPECT_EQ(2, observer()->highlight_mode_count());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(0u));
 
-  // Highlight extensions a and b (grow the highlight list).
-  extension_ids.clear();
-  extension_ids.push_back(browser_action_a()->id());
-  extension_ids.push_back(browser_action_b()->id());
-  toolbar_model()->HighlightExtensions(
-      extension_ids, ExtensionToolbarModel::HIGHLIGHT_WARNING);
+  // Highlight extensions A and B (grow the highlight list).
+  action_ids.clear();
+  action_ids.push_back(browser_action_a()->id());
+  action_ids.push_back(browser_action_b()->id());
+  toolbar_model()->HighlightActions(
+      action_ids, ToolbarActionsModel::HIGHLIGHT_WARNING);
   EXPECT_EQ(3, observer()->highlight_mode_count());
   EXPECT_EQ(2u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
 
   // Highlight no extensions (empty the highlight list).
-  extension_ids.clear();
-  toolbar_model()->HighlightExtensions(
-      extension_ids, ExtensionToolbarModel::HIGHLIGHT_WARNING);
+  action_ids.clear();
+  toolbar_model()->HighlightActions(
+      action_ids, ToolbarActionsModel::HIGHLIGHT_WARNING);
   EXPECT_EQ(2, observer()->highlight_mode_count());
   EXPECT_FALSE(toolbar_model()->is_highlighting());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
-
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
   // Our toolbar size should be back to normal.
   EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
-  EXPECT_EQ(2, profile()->GetPrefs()->GetInteger(pref_names::kToolbarSize));
+  EXPECT_EQ(2, profile()->GetPrefs()->GetInteger(
+      extensions::pref_names::kToolbarSize));
 }
 
-TEST_F(ExtensionToolbarModelUnitTest, ExtensionToolbarHighlightModeRemove) {
+TEST_F(ToolbarActionsModelUnitTest, ActionsToolbarHighlightModeRemove) {
   Init();
 
   // Add the three browser action extensions.
   ASSERT_TRUE(AddBrowserActionExtensions());
   EXPECT_EQ(3u, num_toolbar_items());
 
   // Highlight two of the extensions.
-  ExtensionIdList extension_ids;
-  extension_ids.push_back(browser_action_a()->id());
-  extension_ids.push_back(browser_action_b()->id());
-  toolbar_model()->HighlightExtensions(
-      extension_ids, ExtensionToolbarModel::HIGHLIGHT_WARNING);
+  ActionIds action_ids;
+  action_ids.push_back(browser_action_a()->id());
+  action_ids.push_back(browser_action_b()->id());
+  toolbar_model()->HighlightActions(
+      action_ids, ToolbarActionsModel::HIGHLIGHT_WARNING);
   EXPECT_TRUE(toolbar_model()->is_highlighting());
   EXPECT_EQ(1, observer()->highlight_mode_count());
   EXPECT_EQ(2u, num_toolbar_items());
 
   // Disable one of them - only one should remain highlighted.
   service()->DisableExtension(browser_action_a()->id(),
-                              Extension::DISABLE_USER_ACTION);
+                              extensions::Extension::DISABLE_USER_ACTION);
   EXPECT_TRUE(toolbar_model()->is_highlighting());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(0u));
 
   // Uninstall the remaining highlighted extension. This should result in
   // highlight mode exiting.
   service()->UninstallExtension(browser_action_b()->id(),
-                                UNINSTALL_REASON_FOR_TESTING,
+                                extensions::UNINSTALL_REASON_FOR_TESTING,
                                 base::Bind(&base::DoNothing),
                                 NULL);  // Ignore error.
   EXPECT_FALSE(toolbar_model()->is_highlighting());
   EXPECT_EQ(0, observer()->highlight_mode_count());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
 
   // Test that removing an unhighlighted extension still works.
-  // Reinstall extension b, and then highlight extension c.
+  // Reinstall extension B, and then highlight extension C.
   ASSERT_TRUE(AddExtension(browser_action_b()));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  extension_ids.clear();
-  extension_ids.push_back(browser_action_c()->id());
-  toolbar_model()->HighlightExtensions(
-      extension_ids, ExtensionToolbarModel::HIGHLIGHT_WARNING);
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  action_ids.clear();
+  action_ids.push_back(browser_action_c()->id());
+  toolbar_model()->HighlightActions(
+      action_ids, ToolbarActionsModel::HIGHLIGHT_WARNING);
   EXPECT_EQ(1, observer()->highlight_mode_count());
   EXPECT_TRUE(toolbar_model()->is_highlighting());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
 
-  // Uninstalling b should not have visible impact.
+  // Uninstalling B should not have visible impact.
   service()->UninstallExtension(browser_action_b()->id(),
-                                UNINSTALL_REASON_FOR_TESTING,
+                                extensions::UNINSTALL_REASON_FOR_TESTING,
                                 base::Bind(&base::DoNothing),
                                 NULL);  // Ignore error.
   EXPECT_TRUE(toolbar_model()->is_highlighting());
   EXPECT_EQ(1, observer()->highlight_mode_count());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
 
-  // When we stop, only extension c should remain.
+  // When we stop, only action C should remain.
   toolbar_model()->StopHighlighting();
   EXPECT_FALSE(toolbar_model()->is_highlighting());
   EXPECT_EQ(0, observer()->highlight_mode_count());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
 }
 
-TEST_F(ExtensionToolbarModelUnitTest, ExtensionToolbarHighlightModeAdd) {
+TEST_F(ToolbarActionsModelUnitTest, ActionsToolbarHighlightModeAdd) {
   Init();
 
   // Add the three browser action extensions.
   ASSERT_TRUE(AddBrowserActionExtensions());
   EXPECT_EQ(3u, num_toolbar_items());
 
   // Remove one (down to two).
   ASSERT_TRUE(RemoveExtension(browser_action_c()));
 
-  // Highlight one of the two extensions.
-  ExtensionIdList extension_ids;
-  extension_ids.push_back(browser_action_a()->id());
-  toolbar_model()->HighlightExtensions(
-      extension_ids, ExtensionToolbarModel::HIGHLIGHT_WARNING);
+  // Highlight one of the two actions.
+  ActionIds action_ids;
+  action_ids.push_back(browser_action_a()->id());
+  toolbar_model()->HighlightActions(
+      action_ids, ToolbarActionsModel::HIGHLIGHT_WARNING);
   EXPECT_TRUE(toolbar_model()->is_highlighting());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
 
   // Adding a new extension should have no visible effect.
   ASSERT_TRUE(AddExtension(browser_action_c()));
   EXPECT_TRUE(toolbar_model()->is_highlighting());
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
 
   // When we stop highlighting, we should see the new extension show up.
   toolbar_model()->StopHighlighting();
   EXPECT_FALSE(toolbar_model()->is_highlighting());
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
 }
 
-// Test that the extension toolbar maintains the proper size, even after a pref
+// Test that the action toolbar maintains the proper size, even after a pref
 // change.
-TEST_F(ExtensionToolbarModelUnitTest, ExtensionToolbarSizeAfterPrefChange) {
+TEST_F(ToolbarActionsModelUnitTest, ActionsToolbarSizeAfterPrefChange) {
   Init();
 
   // Add the three browser action extensions.
   ASSERT_TRUE(AddBrowserActionExtensions());
   EXPECT_EQ(3u, num_toolbar_items());
 
   // Should be at max size.
   EXPECT_TRUE(toolbar_model()->all_icons_visible());
   EXPECT_EQ(num_toolbar_items(), toolbar_model()->visible_icon_count());
-  toolbar_model()->OnExtensionToolbarPrefChange();
+  toolbar_model()->OnActionToolbarPrefChange();
   // Should still be at max size.
   EXPECT_TRUE(toolbar_model()->all_icons_visible());
   EXPECT_EQ(num_toolbar_items(), toolbar_model()->visible_icon_count());
 }
 
 // Test that, in the absence of the extension-action-redesign switch, the
-// model only contains extensions with browser actions.
-TEST_F(ExtensionToolbarModelUnitTest, TestToolbarExtensionTypesNoSwitch) {
+// model only contains extensions with browser actions and component actions.
+TEST_F(ToolbarActionsModelUnitTest, TestToolbarExtensionTypesNoSwitch) {
   Init();
   ASSERT_TRUE(AddActionExtensions());
 
   EXPECT_EQ(1u, num_toolbar_items());
-  EXPECT_EQ(browser_action(), GetExtensionAtIndex(0u));
+  EXPECT_EQ(browser_action()->id(), GetActionIdAtIndex(0u));
 }
 
 // Test that, with the extension-action-redesign switch, the model contains
 // all types of extensions, except those which should not be displayed on the
 // toolbar (like component extensions).
-TEST_F(ExtensionToolbarModelUnitTest, TestToolbarExtensionTypesSwitch) {
-  FeatureSwitch::ScopedOverride enable_redesign(
-      FeatureSwitch::extension_action_redesign(), true);
+TEST_F(ToolbarActionsModelUnitTest, TestToolbarExtensionTypesSwitch) {
+  extensions::FeatureSwitch::ScopedOverride enable_redesign(
+      extensions::FeatureSwitch::extension_action_redesign(), true);
   Init();
+
+  // One component action was added when the model was initialized.
+  EXPECT_EQ(1u, num_toolbar_items());
+
   ASSERT_TRUE(AddActionExtensions());
 
   // With the switch on, extensions with page actions and no action should also
   // be displayed in the toolbar.
-  EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(page_action(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(no_action(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(4u, num_toolbar_items());
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(page_action()->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(no_action()->id(), GetActionIdAtIndex(3u));
 }
 
 // Test that hiding actions on the toolbar results in their removal from the
 // model when the redesign switch is not enabled.
-TEST_F(ExtensionToolbarModelUnitTest,
-       ExtensionToolbarActionsVisibilityNoSwitch) {
+TEST_F(ToolbarActionsModelUnitTest,
+       ActionsToolbarActionsVisibilityNoSwitch) {
   Init();
 
-  ExtensionActionAPI* action_api = ExtensionActionAPI::Get(profile());
+  extensions::ExtensionActionAPI* action_api =
+      extensions::ExtensionActionAPI::Get(profile());
 
   ASSERT_TRUE(AddBrowserActionExtensions());
-  // Sanity check: Order should start as A B C.
+  // Sanity check: Order should start as A , B, C.
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
 
   // By default, all actions should be visible.
   EXPECT_TRUE(action_api->GetBrowserActionVisibility(browser_action_a()->id()));
   EXPECT_TRUE(action_api->GetBrowserActionVisibility(browser_action_b()->id()));
   EXPECT_TRUE(action_api->GetBrowserActionVisibility(browser_action_c()->id()));
 
   // Hiding an action should result in its removal from the toolbar.
   action_api->SetBrowserActionVisibility(browser_action_b()->id(), false);
   EXPECT_FALSE(action_api->GetBrowserActionVisibility(
       browser_action_b()->id()));
   // Thus, there should now only be two items on the toolbar - A and C.
   EXPECT_EQ(2u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(1u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(1u));
 
   // Resetting the visibility to 'true' should result in the extension being
   // added back at its original position.
   action_api->SetBrowserActionVisibility(browser_action_b()->id(), true);
   EXPECT_TRUE(action_api->GetBrowserActionVisibility(browser_action_b()->id()));
-  // So the toolbar order should be A B C.
+  // So the toolbar order should be A, B, C.
   EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2u));
 }
 
-TEST_F(ExtensionToolbarModelUnitTest, ExtensionToolbarIncognitoModeTest) {
+TEST_F(ToolbarActionsModelUnitTest, ActionsToolbarIncognitoModeTest) {
   Init();
   ASSERT_TRUE(AddBrowserActionExtensions());
 
   // Give two extensions incognito access.
   // Note: We use ExtensionPrefs::SetIsIncognitoEnabled instead of
   // util::SetIsIncognitoEnabled because the latter tries to reload the
   // extension, which requries a filepath associated with the extension (and,
   // for this test, reloading the extension is irrelevant to us).
-  ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(profile());
+  extensions::ExtensionPrefs* extension_prefs =
+      extensions::ExtensionPrefs::Get(profile());
   extension_prefs->SetIsIncognitoEnabled(browser_action_b()->id(), true);
   extension_prefs->SetIsIncognitoEnabled(browser_action_c()->id(), true);
 
-  util::SetIsIncognitoEnabled(browser_action_b()->id(), profile(), true);
-  util::SetIsIncognitoEnabled(browser_action_c()->id(), profile(), true);
+  extensions::util::SetIsIncognitoEnabled(browser_action_b()->id(),
+      profile(), true);
+  extensions::util::SetIsIncognitoEnabled(browser_action_c()->id(),
+      profile(), true);
 
   // Move C to the second index.
-  toolbar_model()->MoveExtensionIcon(browser_action_c()->id(), 1u);
-  // Set visible count to 2 so that c is overflowed. State is A C [B].
+  toolbar_model()->MoveActionIcon(browser_action_c()->id(), 1u);
+  // Set visible count to 3 so that C is overflowed. State is A, C, [B].
   toolbar_model()->SetVisibleIconCount(2);
   EXPECT_EQ(1u, observer()->moved_count());
 
   // Get an incognito profile and toolbar.
-  ExtensionToolbarModel* incognito_model =
-      extension_action_test_util::CreateToolbarModelForProfile(
+  ToolbarActionsModel* incognito_model =
+      extensions::extension_action_test_util::CreateToolbarModelForProfile(
           profile()->GetOffTheRecordProfile());
 
-  ExtensionToolbarModelTestObserver incognito_observer(incognito_model);
+  ToolbarActionsModelTestObserver incognito_observer(incognito_model);
   EXPECT_EQ(0u, incognito_observer.moved_count());
 
-  // We should have two items, C and B, and the order should be preserved from
-  // the original model.
+  // We should have two items: C, B, and the order should be preserved from the
+  // original model.
   EXPECT_EQ(2u, incognito_model->toolbar_items().size());
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(0u, incognito_model));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1u, incognito_model));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u, incognito_model));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u, incognito_model));
 
-  // Extensions in the overflow menu in the regular toolbar should remain in
-  // overflow in the incognito toolbar. So, we should have C [B].
+  // Actions in the overflow menu in the regular toolbar should remain in
+  // overflow in the incognito toolbar. So, we should have MCA, C, [B].
   EXPECT_EQ(1u, incognito_model->visible_icon_count());
   // The regular model should still have two icons visible.
   EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
 
   // Changing the incognito model size should not affect the regular model.
   incognito_model->SetVisibleIconCount(0);
   EXPECT_EQ(0u, incognito_model->visible_icon_count());
   EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
 
-  // Expanding the incognito model to 2 should register as "all icons"
+  // Expanding the incognito model to 3 should register as "all icons"
   // since it is all of the incognito-enabled extensions.
   incognito_model->SetVisibleIconCount(2u);
   EXPECT_EQ(2u, incognito_model->visible_icon_count());
   EXPECT_TRUE(incognito_model->all_icons_visible());
 
   // Moving icons in the incognito toolbar should not affect the regular
-  // toolbar. Incognito currently has C B...
-  incognito_model->MoveExtensionIcon(browser_action_b()->id(), 0u);
-  // So now it should be B C...
+  // toolbar. Incognito currently has C, B...
+  incognito_model->MoveActionIcon(browser_action_b()->id(), 0u);
+  // So now it should be B, C...
   EXPECT_EQ(1u, incognito_observer.moved_count());
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(0u, incognito_model));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(1u, incognito_model));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(0u, incognito_model));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(1u, incognito_model));
   // ... and the regular toolbar should be unaffected.
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0u));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(1u));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(2u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(2u));
 
   // Similarly, the observer for the regular model should not have received
   // any updates.
   EXPECT_EQ(1u, observer()->moved_count());
 
   // And performing moves on the regular model should have no effect on the
   // incognito model or its observers.
-  toolbar_model()->MoveExtensionIcon(browser_action_c()->id(), 2u);
+  toolbar_model()->MoveActionIcon(browser_action_c()->id(), 2u);
   EXPECT_EQ(2u, observer()->moved_count());
   EXPECT_EQ(1u, incognito_observer.moved_count());
 }
 
 // Test that enabling extensions incognito with an active incognito profile
 // works.
-TEST_F(ExtensionToolbarModelUnitTest,
-       ExtensionToolbarIncognitoEnableExtension) {
+TEST_F(ToolbarActionsModelUnitTest, ActionsToolbarIncognitoEnableExtension) {
   Init();
 
   const char* kManifest =
       "{"
       "  \"name\": \"%s\","
       "  \"version\": \"1.0\","
       "  \"manifest_version\": 2,"
       "  \"browser_action\": {}"
       "}";
 
   // For this test, we need to have "real" extension files, because we need to
   // be able to reload them during the incognito process. Since the toolbar
   // needs to be notified of the reload, we need it this time (as opposed to
   // above, where we simply set the prefs before the incognito bar was
   // created.
-  TestExtensionDir dir1;
+  extensions::TestExtensionDir dir1;
   dir1.WriteManifest(base::StringPrintf(kManifest, "incognito1"));
-  TestExtensionDir dir2;
+  extensions::TestExtensionDir dir2;
   dir2.WriteManifest(base::StringPrintf(kManifest, "incognito2"));
 
-  TestExtensionDir* dirs[] = { &dir1, &dir2 };
-  const Extension* extensions[] = { nullptr, nullptr };
+  extensions::TestExtensionDir* dirs[] = { &dir1, &dir2 };
+  const extensions::Extension* extensions[] = { nullptr, nullptr };
   for (size_t i = 0; i < arraysize(dirs); ++i) {
     // The extension id will be calculated from the file path; we need this to
     // wait for the extension to load.
     base::FilePath path_for_id =
         base::MakeAbsoluteFilePath(dirs[i]->unpacked_path());
     std::string id = crx_file::id_util::GenerateIdForPath(path_for_id);
-    TestExtensionRegistryObserver observer(registry(), id);
-    UnpackedInstaller::Create(service())->Load(dirs[i]->unpacked_path());
+    extensions::TestExtensionRegistryObserver observer(registry(), id);
+    extensions::UnpackedInstaller::Create(service())->Load(
+        dirs[i]->unpacked_path());
     observer.WaitForExtensionLoaded();
     extensions[i] = registry()->enabled_extensions().GetByID(id);
     ASSERT_TRUE(extensions[i]);
   }
 
   // For readability, alias to A and B. Since we'll be reloading these
   // extensions, we also can't rely on pointers.
   std::string extension_a = extensions[0]->id();
   std::string extension_b = extensions[1]->id();
 
   // The first model should have both extensions visible.
   EXPECT_EQ(2u, toolbar_model()->toolbar_items().size());
-  EXPECT_EQ(extension_a, GetExtensionAtIndex(0)->id());
-  EXPECT_EQ(extension_b, GetExtensionAtIndex(1)->id());
+  EXPECT_EQ(extension_a, GetActionIdAtIndex(0u));
+  EXPECT_EQ(extension_b, GetActionIdAtIndex(1u));
 
-  // Set the model to only show one extension, so the order is A [B].
+  // Set the model to only show one extension, so the order is MCA, A, [B].
   toolbar_model()->SetVisibleIconCount(1u);
 
   // Get an incognito profile and toolbar.
-  ExtensionToolbarModel* incognito_model =
-      extension_action_test_util::CreateToolbarModelForProfile(
+  ToolbarActionsModel* incognito_model =
+      extensions::extension_action_test_util::CreateToolbarModelForProfile(
           profile()->GetOffTheRecordProfile());
-  ExtensionToolbarModelTestObserver incognito_observer(incognito_model);
+  ToolbarActionsModelTestObserver incognito_observer(incognito_model);
 
-  // Right now, no extensions are enabled in incognito mode.
+  // Right now, no actions are enabled in incognito mode.
   EXPECT_EQ(0u, incognito_model->toolbar_items().size());
 
-  // Set extension b (which is overflowed) to be enabled in incognito. This
+  // Set extension B (which is overflowed) to be enabled in incognito. This
   // results in b reloading, so wait for it.
   {
-    TestExtensionRegistryObserver observer(registry(), extension_b);
-    util::SetIsIncognitoEnabled(extension_b, profile(), true);
+    extensions::TestExtensionRegistryObserver observer(registry(), extension_b);
+    extensions::util::SetIsIncognitoEnabled(extension_b, profile(), true);
     observer.WaitForExtensionLoaded();
   }
 
   // Now, we should have one icon in the incognito bar. But, since B is
   // overflowed in the main bar, it shouldn't be visible.
   EXPECT_EQ(1u, incognito_model->toolbar_items().size());
-  EXPECT_EQ(extension_b, GetExtensionAtIndex(0u, incognito_model)->id());
+  EXPECT_EQ(extension_b, GetActionIdAtIndex(0u, incognito_model));
   EXPECT_EQ(0u, incognito_model->visible_icon_count());
 
   // Also enable extension a for incognito (again, wait for the reload).
   {
-    TestExtensionRegistryObserver observer(registry(), extension_a);
-    util::SetIsIncognitoEnabled(extension_a, profile(), true);
+    extensions::TestExtensionRegistryObserver observer(registry(), extension_a);
+    extensions::util::SetIsIncognitoEnabled(extension_a, profile(), true);
     observer.WaitForExtensionLoaded();
   }
 
   // Now, both extensions should be enabled in incognito mode. In addition, the
-  // incognito toolbar should have expanded to show extension a (since it isn't
+  // incognito toolbar should have expanded to show extension A (since it isn't
   // overflowed in the main bar).
   EXPECT_EQ(2u, incognito_model->toolbar_items().size());
-  EXPECT_EQ(extension_a, GetExtensionAtIndex(0u, incognito_model)->id());
-  EXPECT_EQ(extension_b, GetExtensionAtIndex(1u, incognito_model)->id());
+  EXPECT_EQ(extension_a, GetActionIdAtIndex(0u, incognito_model));
+  EXPECT_EQ(extension_b, GetActionIdAtIndex(1u, incognito_model));
   EXPECT_EQ(1u, incognito_model->visible_icon_count());
 }
 
 // Test that hiding actions on the toolbar results in sending them to the
 // overflow menu when the redesign switch is enabled.
-TEST_F(ExtensionToolbarModelUnitTest,
-       ExtensionToolbarActionsVisibilityWithSwitch) {
-  FeatureSwitch::ScopedOverride enable_redesign(
-      FeatureSwitch::extension_action_redesign(), true);
+TEST_F(ToolbarActionsModelUnitTest,
+       ActionsToolbarActionsVisibilityWithSwitch) {
+  extensions::FeatureSwitch::ScopedOverride enable_redesign(
+      extensions::FeatureSwitch::extension_action_redesign(), true);
   Init();
 
   // We choose to use all types of extensions here, since the misnamed
   // BrowserActionVisibility is now for toolbar visibility.
   ASSERT_TRUE(AddActionExtensions());
 
   // For readability, alias extensions A B C.
-  const Extension* extension_a = browser_action();
-  const Extension* extension_b = page_action();
-  const Extension* extension_c = no_action();
+  const extensions::Extension* extension_a = browser_action();
+  const extensions::Extension* extension_b = page_action();
+  const extensions::Extension* extension_c = no_action();
 
-  // Sanity check: Order should start as A B C, with all three visible.
-  EXPECT_EQ(3u, num_toolbar_items());
+  // Sanity check: Order should start as MCA, A, B, C, with all four visible.
+  EXPECT_EQ(4u, num_toolbar_items());
   EXPECT_TRUE(toolbar_model()->all_icons_visible());
-  EXPECT_EQ(extension_a, GetExtensionAtIndex(0u));
-  EXPECT_EQ(extension_b, GetExtensionAtIndex(1u));
-  EXPECT_EQ(extension_c, GetExtensionAtIndex(2u));
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(extension_a->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(extension_b->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(extension_c->id(), GetActionIdAtIndex(3u));
 
-  ExtensionActionAPI* action_api = ExtensionActionAPI::Get(profile());
+  extensions::ExtensionActionAPI* action_api =
+      extensions::ExtensionActionAPI::Get(profile());
 
   // By default, all actions should be visible.
   EXPECT_TRUE(action_api->GetBrowserActionVisibility(extension_a->id()));
   EXPECT_TRUE(action_api->GetBrowserActionVisibility(extension_c->id()));
   EXPECT_TRUE(action_api->GetBrowserActionVisibility(extension_b->id()));
 
   // Hiding an action should result in it being sent to the overflow menu.
   action_api->SetBrowserActionVisibility(extension_b->id(), false);
 
-  // Thus, the order should be A C B, with B in the overflow.
-  EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
-  EXPECT_EQ(extension_a, GetExtensionAtIndex(0u));
-  EXPECT_EQ(extension_c, GetExtensionAtIndex(1u));
-  EXPECT_EQ(extension_b, GetExtensionAtIndex(2u));
+  // Thus, the order should be MCA, A, C, B, with B in the overflow.
+  EXPECT_EQ(4u, num_toolbar_items());
+  EXPECT_EQ(3u, toolbar_model()->visible_icon_count());
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(extension_a->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(extension_c->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(extension_b->id(), GetActionIdAtIndex(3u));
 
   // Hiding an extension's action should result in it being sent to the overflow
   // as well, but as the _first_ extension in the overflow.
   action_api->SetBrowserActionVisibility(extension_a->id(), false);
-  // Thus, the order should be C A B, with A and B in the overflow.
-  EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(1u, toolbar_model()->visible_icon_count());
-  EXPECT_EQ(extension_c, GetExtensionAtIndex(0u));
-  EXPECT_EQ(extension_a, GetExtensionAtIndex(1u));
-  EXPECT_EQ(extension_b, GetExtensionAtIndex(2u));
+  // Thus, the order should be MCA, C, A, B, with A and B in the overflow.
+  EXPECT_EQ(4u, num_toolbar_items());
+  EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(extension_c->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(extension_a->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(extension_b->id(), GetActionIdAtIndex(3u));
 
   // Resetting A's visibility to true should send it back to the visible icons
   // (and should grow visible icons by 1), but it should be added to the end of
   // the visible icon list (not to its original position).
   action_api->SetBrowserActionVisibility(extension_a->id(), true);
-  // So order is C A B, with only B in the overflow.
-  EXPECT_EQ(3u, num_toolbar_items());
-  EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
-  EXPECT_EQ(extension_c, GetExtensionAtIndex(0u));
-  EXPECT_EQ(extension_a, GetExtensionAtIndex(1u));
-  EXPECT_EQ(extension_b, GetExtensionAtIndex(2u));
+  // So order is MCA, C, A, B, with only B in the overflow.
+  EXPECT_EQ(4u, num_toolbar_items());
+  EXPECT_EQ(3u, toolbar_model()->visible_icon_count());
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(extension_c->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(extension_a->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(extension_b->id(), GetActionIdAtIndex(3u));
 
-  // Resetting B to be visible should make the order C A B, with no overflow.
+  // Resetting B to be visible should make the order MCA, C, A, B, with no
+  // overflow.
   action_api->SetBrowserActionVisibility(extension_b->id(), true);
-  EXPECT_EQ(3u, num_toolbar_items());
+  EXPECT_EQ(4u, num_toolbar_items());
   EXPECT_TRUE(toolbar_model()->all_icons_visible());
-  EXPECT_EQ(extension_c, GetExtensionAtIndex(0u));
-  EXPECT_EQ(extension_a, GetExtensionAtIndex(1u));
-  EXPECT_EQ(extension_b, GetExtensionAtIndex(2u));
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(extension_c->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(extension_a->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(extension_b->id(), GetActionIdAtIndex(3u));
 
   // Regression test for crbug.com/515963. Check that an extension's visibility
   // is updated when it is moved out because another extension was removed.
-  toolbar_model()->SetVisibleIconCount(1);
+  toolbar_model()->SetVisibleIconCount(2);
   base::RunLoop().RunUntilIdle();
   EXPECT_FALSE(action_api->GetBrowserActionVisibility(extension_a->id()));
   service()->DisableExtension(extension_c->id(),
-                              Extension::DISABLE_USER_ACTION);
-  EXPECT_EQ(1u, toolbar_model()->visible_icon_count());
+                              extensions::Extension::DISABLE_USER_ACTION);
+  EXPECT_EQ(2u, toolbar_model()->visible_icon_count());
   EXPECT_TRUE(action_api->GetBrowserActionVisibility(extension_a->id()));
 }
 
 // Test that observers receive no Added notifications until after the
 // ExtensionSystem has initialized.
-TEST_F(ExtensionToolbarModelUnitTest, ModelWaitsForExtensionSystemReady) {
+TEST_F(ToolbarActionsModelUnitTest, ModelWaitsForExtensionSystemReady) {
   InitializeEmptyExtensionService();
-  ExtensionToolbarModel* toolbar_model =
-       extension_action_test_util::
+  ToolbarActionsModel* toolbar_model =
+       extensions::extension_action_test_util::
            CreateToolbarModelForProfileWithoutWaitingForReady(profile());
-  ExtensionToolbarModelTestObserver model_observer(toolbar_model);
+  ToolbarActionsModelTestObserver model_observer(toolbar_model);
+
   EXPECT_TRUE(AddBrowserActionExtensions());
 
   // Since the model hasn't been initialized (the ExtensionSystem::ready task
   // hasn't been run), there should be no insertion notifications.
   EXPECT_EQ(0u, model_observer.inserted_count());
   EXPECT_EQ(0u, model_observer.initialized_count());
-  EXPECT_FALSE(toolbar_model->extensions_initialized());
+  EXPECT_FALSE(toolbar_model->actions_initialized());
 
   // Run the ready task.
-  static_cast<TestExtensionSystem*>(ExtensionSystem::Get(profile()))->
-      SetReady();
+  static_cast<extensions::TestExtensionSystem*>(
+      extensions::ExtensionSystem::Get(profile()))->SetReady();
   // Run tasks posted to TestExtensionSystem.
   base::RunLoop().RunUntilIdle();
 
   // We should still have no insertions, but should have an initialized count.
-  EXPECT_TRUE(toolbar_model->extensions_initialized());
+  EXPECT_TRUE(toolbar_model->actions_initialized());
   EXPECT_EQ(0u, model_observer.inserted_count());
   EXPECT_EQ(1u, model_observer.initialized_count());
 }
 
 // Check that the toolbar model correctly clears and reorders when it detects
 // a preference change.
-TEST_F(ExtensionToolbarModelUnitTest, ToolbarModelPrefChange) {
+TEST_F(ToolbarActionsModelUnitTest, ToolbarModelPrefChange) {
   Init();
 
   ASSERT_TRUE(AddBrowserActionExtensions());
 
-  // We should start in the basic A B C order.
+  // We should start in the basic A, B, C order.
   ASSERT_TRUE(browser_action_a());
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2));
   // Record the difference between the inserted and removed counts. The actual
   // value of the counts is not important, but we need to be sure that if we
   // call to remove any, we also add them back.
   size_t inserted_and_removed_difference =
       observer()->inserted_count() - observer()->removed_count();
 
-  // Assign a new order, B C A, and write it in the prefs.
-  ExtensionIdList new_order;
+  // Assign a new order, B, C, A, and write it in the prefs.
+  ActionIds new_order;
   new_order.push_back(browser_action_b()->id());
   new_order.push_back(browser_action_c()->id());
   new_order.push_back(browser_action_a()->id());
-  ExtensionPrefs::Get(profile())->SetToolbarOrder(new_order);
+  extensions::ExtensionPrefs::Get(profile())->SetToolbarOrder(new_order);
 
   // Ensure everything has time to run.
   base::RunLoop().RunUntilIdle();
 
   // The new order should be reflected in the model.
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(0));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(1));
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(2));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(0));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(1));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(2));
   EXPECT_EQ(inserted_and_removed_difference,
             observer()->inserted_count() - observer()->removed_count());
 }
 
-TEST_F(ExtensionToolbarModelUnitTest, ComponentExtesionsAddedToEnd) {
+TEST_F(ToolbarActionsModelUnitTest, ComponentExtensionsAddedToEnd) {
   Init();
 
   ASSERT_TRUE(AddBrowserActionExtensions());
 
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(0));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(1));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(2));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(2));
 
   const char kName[] = "component";
-  DictionaryBuilder manifest;
+  extensions::DictionaryBuilder manifest;
   manifest.Set("name", kName)
           .Set("description", "An extension")
           .Set("manifest_version", 2)
           .Set("version", "1.0.0")
-          .Set("browser_action", DictionaryBuilder().Pass());
-  scoped_refptr<const Extension> component_extension =
-      ExtensionBuilder().SetManifest(manifest.Pass())
+          .Set("browser_action", extensions::DictionaryBuilder().Pass());
+  scoped_refptr<const extensions::Extension> component_extension =
+      extensions::ExtensionBuilder().SetManifest(manifest.Pass())
                         .SetID(crx_file::id_util::GenerateId(kName))
-                        .SetLocation(Manifest::COMPONENT)
+                        .SetLocation(extensions::Manifest::COMPONENT)
                         .Build();
   service()->AddExtension(component_extension.get());
 
-  EXPECT_EQ(component_extension.get(), GetExtensionAtIndex(0));
-  EXPECT_EQ(browser_action_a(), GetExtensionAtIndex(1));
-  EXPECT_EQ(browser_action_b(), GetExtensionAtIndex(2));
-  EXPECT_EQ(browser_action_c(), GetExtensionAtIndex(3));
+  EXPECT_EQ(component_extension.get()->id(), GetActionIdAtIndex(0));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(1));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(2));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(3));
 }
 
-TEST_F(ExtensionToolbarModelUnitTest,
+TEST_F(ToolbarActionsModelUnitTest,
        ToolbarModelHighlightsForToolbarRedesign) {
-  FeatureSwitch::ScopedOverride enable_redesign(
-      FeatureSwitch::extension_action_redesign(), true);
+  extensions::FeatureSwitch::ScopedOverride enable_redesign(
+      extensions::FeatureSwitch::extension_action_redesign(), true);
   InitializeEmptyExtensionService();
   EXPECT_TRUE(AddActionExtensions());
-  ExtensionToolbarModel* toolbar_model =
-      extension_action_test_util::CreateToolbarModelForProfile(profile());
+  ToolbarActionsModel* toolbar_model =
+      extensions::extension_action_test_util::CreateToolbarModelForProfile(
+          profile());
   EXPECT_TRUE(toolbar_model);
   base::RunLoop().RunUntilIdle();
 
   EXPECT_TRUE(ExtensionToolbarIconSurfacingBubbleDelegate::ShouldShowForProfile(
       profile()));
   EXPECT_TRUE(toolbar_model->is_highlighting());
-  EXPECT_EQ(ExtensionToolbarModel::HIGHLIGHT_INFO,
+  EXPECT_EQ(ToolbarActionsModel::HIGHLIGHT_INFO,
             toolbar_model->highlight_type());
   EXPECT_EQ(3u, toolbar_model->visible_icon_count());
   EXPECT_EQ(3u, toolbar_model->toolbar_items().size());
 
   scoped_ptr<ToolbarActionsBarBubbleDelegate> bubble(
       new ExtensionToolbarIconSurfacingBubbleDelegate(profile()));
   bubble->OnBubbleClosed(ToolbarActionsBarBubbleDelegate::CLOSE_DISMISS);
 
   EXPECT_FALSE(toolbar_model->is_highlighting());
-  EXPECT_EQ(ExtensionToolbarModel::HIGHLIGHT_NONE,
+  EXPECT_EQ(ToolbarActionsModel::HIGHLIGHT_NONE,
             toolbar_model->highlight_type());
 }
 
-}  // namespace extensions
+// Test various different reorderings, removals, and reinsertions.
+TEST_F(ToolbarActionsModelUnitTest,
+       ActionsToolbarReorderAndReinsertWithSwitch) {
+  extensions::FeatureSwitch::ScopedOverride enable_redesign(
+      extensions::FeatureSwitch::extension_action_redesign(), true);
+  Init();
+
+  // One component action was added when the model was initialized.
+  EXPECT_EQ(1u, num_toolbar_items());
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(0u));
+
+  // Add the three browser action extensions.
+  ASSERT_TRUE(AddBrowserActionExtensions());
+
+  // Verify the four actions are in the model in the proper order.
+  EXPECT_EQ(4u, num_toolbar_items());
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(3u));
+
+  // Order is now MCA, A, B, C. Let's put C first.
+  toolbar_model()->MoveActionIcon(browser_action_c()->id(), 0);
+  EXPECT_EQ(1u, observer()->moved_count());
+  EXPECT_EQ(4u, num_toolbar_items());
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(3u));
+
+  // Order is now C, MCA, A, B. Let's put MCA last.
+  toolbar_model()->MoveActionIcon(component_action_id(), 3);
+  EXPECT_EQ(2u, observer()->moved_count());
+  EXPECT_EQ(4u, num_toolbar_items());
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(3u));
+
+  // Order is now C, A, B, MCA. Move MCA to the location it already occupies.
+  toolbar_model()->MoveActionIcon(component_action_id(), 3);
+  EXPECT_EQ(3u, observer()->moved_count());
+  EXPECT_EQ(4u, num_toolbar_items());
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(2u));
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(3u));
+
+  // Order is still C, A, B, MCA. Remove C.
+  ASSERT_TRUE(RemoveExtension(browser_action_c()));
+  EXPECT_EQ(1u, observer()->removed_count());
+  EXPECT_EQ(3u, num_toolbar_items());
+  EXPECT_EQ(browser_action_a()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(1u));
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(2u));
+
+  // Order is now A, B, MCA. Remove A.
+  ASSERT_TRUE(RemoveExtension(browser_action_a()));
+  EXPECT_EQ(2u, observer()->removed_count());
+  EXPECT_EQ(2u, num_toolbar_items());
+  EXPECT_EQ(browser_action_b()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(1u));
+
+  // Order is now B, MCA. Remove B.
+  ASSERT_TRUE(RemoveExtension(browser_action_b()));
+  EXPECT_EQ(3u, observer()->removed_count());
+  EXPECT_EQ(1u, num_toolbar_items());
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(0u));
+
+  // Load extension C again.
+  ASSERT_TRUE(AddExtension(browser_action_c()));
+  EXPECT_EQ(4u, observer()->inserted_count());
+  EXPECT_EQ(2u, num_toolbar_items());
+  // Make sure it gets its old spot in the list (at the beginning).
+  EXPECT_EQ(browser_action_c()->id(), GetActionIdAtIndex(0u));
+  EXPECT_EQ(component_action_id(), GetActionIdAtIndex(1u));
+}