Cleanup many APIs to use ProfileKeyedAPI.

chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_SYNC_FILE_SYSTEM_EXTENSION_SYNC_EVENT_OBSERVER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_SYNC_FILE_SYSTEM_EXTENSION_SYNC_EVENT_OBSERVER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
+#include "chrome/browser/extensions/api/profile_keyed_api_factory.h"
 #include "chrome/browser/sync_file_system/sync_event_observer.h"
-#include "components/browser_context_keyed_service/browser_context_keyed_service.h"
 
-class Profile;
+namespace content {
+class BrowserContext;
+}
 
 namespace sync_file_system {
 class SyncFileSystemService;
 }
 
 namespace extensions {
 
 // Observes changes in SyncFileSystem and relays events to JS Extension API.
-class ExtensionSyncEventObserver
-    : public sync_file_system::SyncEventObserver,
-      public BrowserContextKeyedService {
+class ExtensionSyncEventObserver : public sync_file_system::SyncEventObserver,
+                                   public ProfileKeyedAPI {
  public:
-  explicit ExtensionSyncEventObserver(Profile* profile);
+  static ProfileKeyedAPIFactory<ExtensionSyncEventObserver>*
+      GetFactoryInstance();
+
+  explicit ExtensionSyncEventObserver(content::BrowserContext* context);
   virtual ~ExtensionSyncEventObserver();
 
   void InitializeForService(
       sync_file_system::SyncFileSystemService* sync_service);
 
   // BrowserContextKeyedService override.
   virtual void Shutdown() OVERRIDE;
 
   // sync_file_system::SyncEventObserver interface implementation.
   virtual void OnSyncStateUpdated(
       const GURL& app_origin,
       sync_file_system::SyncServiceState state,
       const std::string& description) OVERRIDE;
 
   virtual void OnFileSynced(
       const fileapi::FileSystemURL& url,
       sync_file_system::SyncFileStatus status,
       sync_file_system::SyncAction action,
       sync_file_system::SyncDirection direction) OVERRIDE;
 
  private:
+  friend class ProfileKeyedAPIFactory<ExtensionSyncEventObserver>;
+
   // Returns an empty string if the extension |app_origin| cannot be found
   // in the installed extension list.
   std::string GetExtensionId(const GURL& app_origin);
 
-  Profile* profile_;
+  // ProfileKeyedAPI implementation.
+  static const char* service_name() { return "ExtensionSyncEventObserver"; }
+  static const bool kServiceIsCreatedWithBrowserContext = false;
+
+  content::BrowserContext* browser_context_;
 
   // Not owned. If not null, then this is registered to SyncFileSystemService.
   sync_file_system::SyncFileSystemService* sync_service_;
 
   void BroadcastOrDispatchEvent(const GURL& app_origin,
                                 const std::string& event_name,
                                 scoped_ptr<base::ListValue> value);
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionSyncEventObserver);
 };
 
+template <>
+void ProfileKeyedAPIFactory<
+    ExtensionSyncEventObserver>::DeclareFactoryDependencies();
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SYNC_FILE_SYSTEM_EXTENSION_SYNC_EVENT_OBSERVER_H_