chrome: Use base::MessageLoop. (Part 3)

chrome/browser/history/history_backend.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_HISTORY_HISTORY_BACKEND_H_
 #define CHROME_BROWSER_HISTORY_HISTORY_BACKEND_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 456 matching lines @@
   // state into the HistoryBackend databases. Close all of the databases managed
   // HistoryBackend as there are no provisions for accessing the other databases
   // managed by HistoryBackend when the history database cannot be accessed.
   void KillHistoryDatabase();
 
   // Testing -------------------------------------------------------------------
 
   // Sets the task to run and the message loop to run it on when this object
   // is destroyed. See HistoryService::SetOnBackendDestroyTask for a more
   // complete description.
-  void SetOnBackendDestroyTask(MessageLoop* message_loop,
+  void SetOnBackendDestroyTask(base::MessageLoop* message_loop,
                                const base::Closure& task);
 
   // Adds the given rows to the database if it doesn't exist. A visit will be
   // added for each given URL at the last visit time in the URLRow if the
   // passed visit type != SOURCE_SYNCED (the sync code manages visits itself).
   // Each visit will have the visit_source type set.
   void AddPagesWithDetails(const URLRows& info, VisitSource visit_source);
 
 #if defined(UNIT_TEST)
   HistoryDatabase* db() const { return db_.get(); }
@@ skipping 371 matching lines @@
   //
   // As with AddPage, the last item in the redirect chain will be the
   // destination of the redirect (i.e., the key into recent_redirects_);
   typedef base::MRUCache<GURL, history::RedirectList> RedirectCache;
   RedirectCache recent_redirects_;
 
   // Timestamp of the first entry in our database.
   base::Time first_recorded_time_;
 
   // When set, this is the task that should be invoked on destruction.
-  MessageLoop* backend_destroy_message_loop_;
+  base::MessageLoop* backend_destroy_message_loop_;
   base::Closure backend_destroy_task_;
 
   // Tracks page transition types.
   VisitTracker tracker_;
 
   // A boolean variable to track whether we have already purged obsolete segment
   // data.
   bool segment_queried_;
 
   // HistoryDBTasks to run. Be sure to AddRef when adding, and Release when
@@ skipping 15 matching lines @@
   // Used to provide the Android ContentProvider APIs.
   scoped_ptr<AndroidProviderBackend> android_provider_backend_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(HistoryBackend);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_HISTORY_BACKEND_H_