[GCM] Extracting GCMConnectionObserver from GCMAppHandler

components/gcm_driver/fake_gcm_app_handler.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 "components/gcm_driver/fake_gcm_app_handler.h"
 
 #include "base/run_loop.h"
 
 namespace gcm {
 
 FakeGCMAppHandler::FakeGCMAppHandler()
-    : received_event_(NO_EVENT), connected_(false) {
+    : received_event_(NO_EVENT) {
 }
 
 FakeGCMAppHandler::~FakeGCMAppHandler() {
 }
 
 void FakeGCMAppHandler::WaitForNotification() {
   run_loop_.reset(new base::RunLoop);
   run_loop_->Run();
   run_loop_.reset();
 }
@@ skipping 41 matching lines @@
 }
 
 void FakeGCMAppHandler::ClearResults() {
   received_event_ = NO_EVENT;
   app_id_.clear();
   acked_message_id_.clear();
   message_ = GCMClient::IncomingMessage();
   send_error_details_ = GCMClient::SendErrorDetails();
 }
 
-void FakeGCMAppHandler::OnConnected(const net::IPEndPoint& ip_endpoint) {
-  connected_ = true;
-}
-
-void FakeGCMAppHandler::OnDisconnected() {
-  connected_ = false;
-}
-
 }  // namespace gcm