Moved the AppNotification system into extensions namespace

chrome/browser/extensions/app_notify_channel_ui_android.cc

 // Copyright (c) 2012 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/extensions/app_notify_channel_ui_android.h"
 
 #include "base/logging.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 
+namespace extensions {
+
 AppNotifyChannelUIAndroid::AppNotifyChannelUIAndroid() {}
 
 AppNotifyChannelUIAndroid::~AppNotifyChannelUIAndroid() {
 }
 
 // static
 AppNotifyChannelUI* AppNotifyChannelUI::Create(Profile* profile,
     TabContents* tab_contents,
     const std::string& app_name,
     AppNotifyChannelUI::UIType ui_type) {
   return new AppNotifyChannelUIAndroid();
 }
 
 void AppNotifyChannelUIAndroid::PromptSyncSetup(
     AppNotifyChannelUI::Delegate* delegate) {
   NOTIMPLEMENTED();
 }
+
+}  // namespace extensions