Implement a permission check for push.

chrome/browser/services/gcm/push_messaging_service_impl.h

Index: chrome/browser/services/gcm/push_messaging_service_impl.h
diff --git a/chrome/browser/services/gcm/push_messaging_service_impl.h b/chrome/browser/services/gcm/push_messaging_service_impl.h
index aea8a08edf8321f1cd0a9d2d449892652b891164..4a049fb3a41685db30260a4db64434945ff8ef55 100644
--- a/chrome/browser/services/gcm/push_messaging_service_impl.h
+++ b/chrome/browser/services/gcm/push_messaging_service_impl.h
@@ -48,6 +48,8 @@ class PushMessagingServiceImpl : public content::PushMessagingService,
   virtual void Register(
       const std::string& app_id,
       const std::string& sender_id,
+      int renderer_id,
+      int router_id,
       const content::PushMessagingService::RegisterCallback& callback) OVERRIDE;
 
  private:
@@ -57,6 +59,12 @@ class PushMessagingServiceImpl : public content::PushMessagingService,
       const std::string& registration_id,
       GCMClient::Result result);
 
+  void DidRequestPermission(
+      const std::string& sender_id,
+      const std::string& app_id,
+      const content::PushMessagingService::RegisterCallback& callback,
+      bool allow);
+
   GCMProfileService* gcm_profile_service_;  // It owns us.
 
   Profile* profile_;  // It owns our owner.