Moved the AppNotification system into extensions namespace

chrome/browser/extensions/app_notify_channel_setup.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_APP_NOTIFY_CHANNEL_SETUP_H_
 #define CHROME_BROWSER_EXTENSIONS_APP_NOTIFY_CHANNEL_SETUP_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/app_notify_channel_ui.h"
 #include "chrome/common/net/gaia/oauth2_access_token_consumer.h"
 #include "chrome/common/net/gaia/oauth2_access_token_fetcher.h"
 #include "googleurl/src/gurl.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_fetcher_delegate.h"
 
+class Profile;
+
+namespace extensions {
 class AppNotifyChannelSetupTest;
-class Profile;
 
 // This class uses the browser login credentials to setup app notifications
 // for a given app.
 //
 // Performs the following steps when Start() is called:
 // 1. If the user is not logged in, prompt the user to login.
 // 2. OAuth2: Record a notifications grant for the user and the given app.
 // 3. Get notifications channel id for the current user.
 // 4. Call the delegate passed in to the constructor with the results of
 //    the above steps.
@@ skipping 134 matching lines @@
   std::string oauth2_access_token_;
   // Keeps track of whether we have encountered failure in OAuth2 access
   // token generation already. We use this to prevent us from doing an
   // infinite loop of trying to generate access token, if that fails, try
   // to login the user and generate access token, etc.
   bool oauth2_access_token_failure_;
 
   DISALLOW_COPY_AND_ASSIGN(AppNotifyChannelSetup);
 };
 
+}  // namespace extensions
+
 #endif  // CHROME_BROWSER_EXTENSIONS_APP_NOTIFY_CHANNEL_SETUP_H_