Revert r276792 - "Hook PushMessagingMessageFilter up to GCMDriver"

content/public/browser/browser_context.h

Index: content/public/browser/browser_context.h
diff --git a/content/public/browser/browser_context.h b/content/public/browser/browser_context.h
index a34fd8dc80e2a24bb8d906bd4b76c39344b978c6..27a5569dba49ec295b6ec6cefccbebe0c778b8df 100644
--- a/content/public/browser/browser_context.h
+++ b/content/public/browser/browser_context.h
@@ -37,7 +37,6 @@ class DownloadManager;
 class DownloadManagerDelegate;
 class GeolocationPermissionContext;
 class IndexedDBContext;
-class PushMessagingService;
 class ResourceContext;
 class SiteInstance;
 class StoragePartition;
@@ -184,11 +183,6 @@ class CONTENT_EXPORT BrowserContext : public base::SupportsUserData {
 
   // Returns a special storage policy implementation, or NULL.
   virtual quota::SpecialStoragePolicy* GetSpecialStoragePolicy() = 0;
-
-  // Returns a push messaging service. The embedder owns the service, and is
-  // responsible for ensuring that it outlives RenderProcessHost. It's valid to
-  // return NULL.
-  virtual PushMessagingService* GetPushMessagingService() = 0;
 };
 
 }  // namespace content