browser: Start moving application_lifetime.h functions into chrome namespace.

chrome/browser/lifetime/application_lifetime.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_LIFETIME_APPLICATION_LIFETIME_H_
 #define CHROME_BROWSER_LIFETIME_APPLICATION_LIFETIME_H_
 
 namespace browser {
 
 // Starts a user initiated exit process. Called from Browser::Exit.
@@ skipping 36 matching lines @@
 #endif
 
 // Closes all browsers. If the session is ending the windows are closed
 // directly. Otherwise the windows are closed by way of posting a WM_CLOSE
 // message.
 void CloseAllBrowsers();
 
 // Begins shutdown of the application when the desktop session is ending.
 void SessionEnding();
 
+}  // namespace browser
+
+namespace chrome {
+
 // Tells the BrowserList to keep the application alive after the last Browser
 // closes. This is implemented as a count, so callers should pair their calls
 // to StartKeepAlive() with matching calls to EndKeepAlive() when they no
 // longer need to keep the application running.
 void StartKeepAlive();
 
 // Stops keeping the application alive after the last Browser is closed.
 // Should match a previous call to StartKeepAlive().
 void EndKeepAlive();
 
 // Returns true if application will continue running after the last Browser
 // closes.
 bool WillKeepAlive();
 
 // Emits APP_TERMINATING notification. It is guaranteed that the
 // notification is sent only once.
 void NotifyAppTerminating();
 
 // Send out notifications.
 // For ChromeOS, also request session manager to end the session.
 void NotifyAndTerminate(bool fast_path);
 
 // Called once the application is exiting.
 void OnAppExiting();
 
 // Called once the application is exiting to do any platform specific
 // processing required.
 void HandleAppExitingForPlatform();
 
-}  // namespace browser
+}  // namespace chrome
 
 #endif  // CHROME_BROWSER_LIFETIME_APPLICATION_LIFETIME_H_