Implement WebPushProvider.unregister() in Chromium.

content/child/push_messaging/push_dispatcher.cc

 // Copyright 2014 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.
 
 #include "content/child/push_messaging/push_dispatcher.h"
 
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/pickle.h"
 #include "content/child/push_messaging/push_provider.h"
 #include "content/child/thread_safe_sender.h"
@@ skipping 54 matching lines @@
 }
 
 bool PushDispatcher::ShouldHandleMessage(const IPC::Message& msg) {
   // Note that not all Push API IPC messages flow through this class. A subset
   // of the API functionality requires a direct association with a document and
   // a frame, and for those cases the IPC messages are handled by a
   // RenderFrameObserver.
   return msg.type() == PushMessagingMsg_RegisterFromWorkerSuccess::ID ||
          msg.type() == PushMessagingMsg_RegisterFromWorkerError::ID ||
          msg.type() == PushMessagingMsg_GetPermissionStatusSuccess::ID ||
-         msg.type() == PushMessagingMsg_GetPermissionStatusError::ID;
+         msg.type() == PushMessagingMsg_GetPermissionStatusError::ID ||
+         msg.type() == PushMessagingMsg_UnregisterSuccess::ID ||
+         msg.type() == PushMessagingMsg_UnregisterError::ID;
 }
 
 }  // namespace content