[GCM] Remove all persisted data and close connections when signing out of a profile

chrome/browser/services/gcm/gcm_profile_service.h

Index: chrome/browser/services/gcm/gcm_profile_service.h
diff --git a/chrome/browser/services/gcm/gcm_profile_service.h b/chrome/browser/services/gcm/gcm_profile_service.h
index 03d26ac8bf4ee920c443383bd751c423bd89d452..633a6e8c7356953d3f57ef91c964a75b60e4cec7 100644
--- a/chrome/browser/services/gcm/gcm_profile_service.h
+++ b/chrome/browser/services/gcm/gcm_profile_service.h
@@ -161,6 +161,10 @@ class GCMProfileService : public BrowserContextKeyedService,
   // Returns the event router to fire the event for the given app.
   GCMEventRouter* GetEventRouter(const std::string& app_id) const;
 
+  // Used to persist the IDs of registered apps.
+  void ReadRegisteredAppIDs();
+  void WriteRegisteredAppIDs();
+
   // Used to persist registration info into the app's state store.
   void DeleteRegistrationInfo(const std::string& app_id);
   void WriteRegistrationInfo(const std::string& app_id);