[GCM] Add app handler support for connection events

components/gcm_driver/gcm_app_handler.cc

Index: components/gcm_driver/gcm_app_handler.cc
diff --git a/components/gcm_driver/gcm_app_handler.cc b/components/gcm_driver/gcm_app_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6c91abafb76095deff65f901cd45a28dabee4f2f
--- /dev/null
+++ b/components/gcm_driver/gcm_app_handler.cc
@@ -0,0 +1,18 @@
+// Copyright (c) 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/gcm_app_handler.h"
+
+namespace gcm {
+
+GCMAppHandler::GCMAppHandler() {}
+GCMAppHandler::~GCMAppHandler() {}
+
+void GCMAppHandler::OnConnected(const net::IPEndPoint& ip_endpoint) {
+}
+
+void GCMAppHandler::OnDisconnected() {
+}
+
+}  // namespace gcm