Revert of Show the Cast toolbar icon ephemerally when Cast is in use

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 "chrome/browser/ui/toolbar/toolbar_actions_model.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 1290 matching lines @@
   base::RunLoop().RunUntilIdle();
 
   // The new order should be reflected in the model.
   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(ToolbarActionsModelUnitTest, ComponentExtensionsAddedToEnd) {
+  Init();
+
+  ASSERT_TRUE(AddBrowserActionExtensions());
+
+  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";
+  extensions::DictionaryBuilder manifest;
+  manifest.Set("name", kName)
+      .Set("description", "An extension")
+      .Set("manifest_version", 2)
+      .Set("version", "1.0.0")
+      .Set("browser_action", extensions::DictionaryBuilder().Build());
+  scoped_refptr<const extensions::Extension> component_extension =
+      extensions::ExtensionBuilder()
+          .SetManifest(manifest.Build())
+          .SetID(crx_file::id_util::GenerateId(kName))
+          .SetLocation(extensions::Manifest::COMPONENT)
+          .Build();
+  service()->AddExtension(component_extension.get());
+
+  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 various different reorderings, removals, and reinsertions of the
 // toolbar with component actions.
 TEST_F(ToolbarActionsModelUnitTest,
        ActionsToolbarReorderAndReinsertWithSwitchAndComponentActions) {
   extensions::FeatureSwitch::ScopedOverride enable_redesign(
       extensions::FeatureSwitch::extension_action_redesign(), true);
   SetMockActionsFactory(new MockComponentToolbarActionsFactory(nullptr));
   Init();
 
   // One component action was added when the model was initialized.
@@ skipping 182 matching lines @@
 }
 
 TEST_F(ToolbarActionsModelUnitTest,
        MigrationToExtensionWithoutExtensionActionRedesign) {
   InitForMigrationTest(MigrationStatus::FEATURE_DISABLED_WITH_PREF_TRUE);
 
   // Initialization re-enables the extension.
   EXPECT_EQ(1u, num_toolbar_items());
   EXPECT_EQ(browser_action_migrated()->id(), GetActionIdAtIndex(0u));
 }