Refactor shutdown code to allow win/linux to run after last browser closes.

chrome/browser/background_contents_service.h

 // Copyright (c) 2010 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_BACKGROUND_CONTENTS_SERVICE_H_
 #define CHROME_BROWSER_BACKGROUND_CONTENTS_SERVICE_H_
 
 #include <map>
 
 #include "chrome/common/notification_observer.h"
@@ skipping 90 matching lines @@
     string16 frame_name;
   };
 
   // Map associating currently loaded BackgroundContents with their parent
   // applications.
   // Key: application id
   // Value: BackgroundContentsInfo for the BC associated with that application
   typedef std::map<string16, BackgroundContentsInfo> BackgroundContentsMap;
   BackgroundContentsMap contents_map_;
 
+  // If true, should always keep the browser process alive regardless of whether
+  // there are any BackgroundContents (used for manual/automated testing).
+  bool always_keep_alive_;
+
   DISALLOW_COPY_AND_ASSIGN(BackgroundContentsService);
 };
 
 #endif  // CHROME_BROWSER_BACKGROUND_CONTENTS_SERVICE_H_