Cleanup: Pull some browser keep alive functions into its own file.

chrome/browser/ui/app_list/profile_loader.h

 // Copyright 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.
 
 #ifndef CHROME_BROWSER_UI_APP_LIST_PROFILE_LOADER_H_
 #define CHROME_BROWSER_UI_APP_LIST_PROFILE_LOADER_H_
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 
 namespace base {
 class FilePath;
 }
 
+namespace browser_lifetime {
+class ScopedKeepAlive;
+}
+
 class Profile;
 class ProfileLoaderUnittest;
 class ProfileStore;
-class ScopedKeepAlive;
 
 // This class loads profiles asynchronously and calls the provided callback once
 // the profile is ready. Only the callback for the most recent load request is
 // called, and only if the load was successful.
 //
 // This is useful for loading profiles in response to user interaction where
 // only the latest requested profile is required.
 // TODO(koz): Merge this into AppListServiceImpl.
 class ProfileLoader {
  public:
@@ skipping 10 matching lines @@
   friend class ::ProfileLoaderUnittest;
 
   void OnProfileLoaded(int profile_load_sequence_id,
                        base::Callback<void(Profile*)> callback,
                        Profile* profile);
 
   void IncrementPendingProfileLoads();
   void DecrementPendingProfileLoads();
 
   ProfileStore* profile_store_;
-  scoped_ptr<ScopedKeepAlive> keep_alive_;
+  scoped_ptr<browser_lifetime::ScopedKeepAlive> keep_alive_;
   int profile_load_sequence_id_;
   int pending_profile_loads_;
 
   base::WeakPtrFactory<ProfileLoader> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileLoader);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_PROFILE_LOADER_H_