Make MediaPlayerEventRouter a PKS to decouple it from ExtensionService

chrome/browser/chromeos/extensions/media_player_api.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_CHROMEOS_MEDIA_MEDIA_PLAYER_EXTENSION_API_H_
-#define CHROME_BROWSER_CHROMEOS_MEDIA_MEDIA_PLAYER_EXTENSION_API_H_
+#ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_MEDIA_PLAYER_API_H_
+#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_MEDIA_PLAYER_API_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
+#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/extension_function.h"
+#include "chrome/browser/profiles/profile_keyed_service.h"
+
+class Profile;
+
+namespace extensions {
+class MediaPlayerEventRouter;
 
 // Implements the chrome.mediaPlayerPrivate.play method.
 class PlayMediaplayerFunction : public SyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION_NAME("mediaPlayerPrivate.play");
 
  protected:
   virtual ~PlayMediaplayerFunction() {}
 
   // SyncExtensionFunction overrides.
@@ skipping 29 matching lines @@
  public:
   DECLARE_EXTENSION_FUNCTION_NAME("mediaPlayerPrivate.closeWindow");
 
  protected:
   virtual ~CloseWindowMediaplayerFunction() {}
 
   // SyncExtensionFunction overrides.
   virtual bool RunImpl() OVERRIDE;
 };
 
-#endif  // CHROME_BROWSER_CHROMEOS_MEDIA_MEDIA_PLAYER_EXTENSION_API_H_
+class MediaPlayerAPI : public ProfileKeyedService {
+ public:
+  explicit MediaPlayerAPI(Profile* profile);
+  virtual ~MediaPlayerAPI();
+
+  // Convenience method to get the MediaPlayerAPI for a profile.
+  static MediaPlayerAPI* Get(Profile* profile);
+
+  MediaPlayerEventRouter* media_player_event_router();
+
+ private:
+  Profile* const profile_;
+
+  scoped_ptr<MediaPlayerEventRouter> media_player_event_router_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaPlayerAPI);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_MEDIA_PLAYER_API_H_