ExtensionDelegate to abstract extension implementation

athena/content/content_app_model_builder.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 "athena/content/public/content_app_model_builder.h"
 
 #include "athena/activity/public/activity_factory.h"
 #include "athena/activity/public/activity_manager.h"
+#include "athena/extensions/public/extensions_delegate.h"
 #include "extensions/browser/extension_icon_image.h"
 #include "extensions/common/constants.h"
-#include "extensions/common/extension.h"
+#include "extensions/common/extension_set.h"
 #include "extensions/common/manifest_handlers/icons_handler.h"
-#include "extensions/shell/browser/shell_extension_system.h"
 #include "ui/app_list/app_list_item.h"
 #include "ui/app_list/app_list_model.h"
 
-using extensions::ShellExtensionSystem;
-
 namespace athena {
 
 namespace {
 
-ShellExtensionSystem* GetShellExtensionSystem(
-    content::BrowserContext* context) {
-  return static_cast<ShellExtensionSystem*>(
-      extensions::ExtensionSystem::Get(context));
-}
-
 gfx::ImageSkia CreateFlatColorImage(SkColor color) {
   SkBitmap bitmap;
   bitmap.allocN32Pixels(extension_misc::EXTENSION_ICON_MEDIUM,
                         extension_misc::EXTENSION_ICON_MEDIUM);
   bitmap.eraseColor(color);
   return gfx::ImageSkia::CreateFrom1xBitmap(bitmap);
 }
 
 // Same dummy item.
 class DummyItem : public app_list::AppListItem {
@@ skipping 18 matching lines @@
   }
 
   GURL url_;
   content::BrowserContext* browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(DummyItem);
 };
 
 class AppItem : public app_list::AppListItem {
  public:
-  AppItem(scoped_refptr<extensions::Extension> extension,
+  AppItem(scoped_refptr<const extensions::Extension> extension,
           content::BrowserContext* browser_context)
       : app_list::AppListItem(extension->id()),
         extension_(extension),
         browser_context_(browser_context),
         icon_image_(browser_context_,
                     extension.get(),
                     extensions::IconsInfo::GetIcons(extension.get()),
                     extension_misc::EXTENSION_ICON_MEDIUM,
                     // TODO(mukai): better default icon
                     CreateFlatColorImage(SK_ColorBLACK),
                     NULL) {
     icon_image_.image_skia().EnsureRepsForSupportedScales();
     SetIcon(icon_image_.image_skia(), false);
     SetName(extension->name());
   }
 
  private:
   // Overridden from app_list::AppListItem:
   virtual void Activate(int event_flags) OVERRIDE {
-    // TODO(mukai): Pass |extension_| when the extension system supports
-    // multiple extensions.
-    GetShellExtensionSystem(browser_context_)->LaunchApp();
+    ExtensionsDelegate::Get(browser_context_)->LaunchApp(extension_->id());
   }
 
-  scoped_refptr<extensions::Extension> extension_;
+  scoped_refptr<const extensions::Extension> extension_;
   content::BrowserContext* browser_context_;
   extensions::IconImage icon_image_;
 
   DISALLOW_COPY_AND_ASSIGN(AppItem);
 };
 
 }  // namespace
 
 ContentAppModelBuilder::ContentAppModelBuilder(
     content::BrowserContext* browser_context)
     : browser_context_(browser_context) {
 }
 
 ContentAppModelBuilder::~ContentAppModelBuilder() {
 }
 
 void ContentAppModelBuilder::PopulateApps(app_list::AppListModel* model) {
-  ShellExtensionSystem* extension_system =
-      GetShellExtensionSystem(browser_context_);
-  if (extension_system && extension_system->extension()) {
+  ExtensionsDelegate* bridge = ExtensionsDelegate::Get(browser_context_);
+  const extensions::ExtensionSet& extensions = bridge->GetInstalledExtensions();
+  for (extensions::ExtensionSet::const_iterator iter = extensions.begin();
+       iter != extensions.end();
+       ++iter) {
     model->AddItem(scoped_ptr<app_list::AppListItem>(
-        new AppItem(extension_system->extension(), browser_context_)));
+        new AppItem(*iter, browser_context_)));
   }
 
   model->AddItem(scoped_ptr<app_list::AppListItem>(new DummyItem(
       "mail", GURL("http://gmail.com/"), SK_ColorRED, browser_context_)));
   model->AddItem(scoped_ptr<app_list::AppListItem>(new DummyItem(
       "calendar", GURL("https://calendar.google.com/"),
       SK_ColorBLUE, browser_context_)));
   model->AddItem(scoped_ptr<app_list::AppListItem>(new DummyItem(
       "video", GURL("http://youtube.com/"), SK_ColorGREEN, browser_context_)));
   model->AddItem(scoped_ptr<app_list::AppListItem>(new DummyItem(
       "music", GURL("http://play.google.com/music"),
       SK_ColorYELLOW, browser_context_)));
   model->AddItem(scoped_ptr<app_list::AppListItem>(new DummyItem(
       "contact", GURL("https://www.google.com/contacts"),
       SK_ColorCYAN, browser_context_)));
 }
 
 }  // namespace athena