Create services/gcm directory and add some initial files

chrome/browser/services/gcm/gcm_profile_service.cc

+// Copyright (c) 2013 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 "chrome/browser/services/gcm/gcm_profile_service.h"
+#include "chrome/common/chrome_version_info.h"
+
+namespace gcm {
+
+// static
+bool GCMProfileService::IsGCMEnabled() {
+  // GCM support is only enabled for Canary/Dev builds.
+  chrome::VersionInfo::Channel channel = chrome::VersionInfo::GetChannel();
+  return channel == chrome::VersionInfo::CHANNEL_CANARY ||
+         channel == chrome::VersionInfo::CHANNEL_DEV;
+}
+
+GCMProfileService::GCMProfileService(Profile* profile)
+    : profile_(profile) {
+}
+
+GCMProfileService::~GCMProfileService() {
+}
+
+}  // namespace gcm