Split FaviconService and FaviconServiceImpl.

components/history/core/browser/history_service.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 COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_SERVICE_H_
 #define COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_SERVICE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 35 matching lines @@
 class SkBitmap;
 class SyncBookmarkDataTypeControllerTest;
 class TestingProfile;
 
 namespace base {
 class FilePath;
 class Thread;
 }
 
 namespace favicon {
-class FaviconService;
+class FaviconServiceImpl;
 }
 
 namespace history {
 
 struct DownloadRow;
 struct HistoryAddPageArgs;
 class HistoryBackend;
 class HistoryClient;
 class HistoryDBTask;
 struct HistoryDatabaseParams;
@@ skipping 470 matching lines @@
   enum SchedulePriority {
     PRIORITY_UI,      // The highest priority (must respond to UI events).
     PRIORITY_NORMAL,  // Normal stuff like adding a page.
     PRIORITY_LOW,     // Low priority things like indexing or expiration.
   };
 
  private:
   class BackendDelegate;
   friend class base::RefCountedThreadSafe<HistoryService>;
   friend class BackendDelegate;
-  friend class favicon::FaviconService;
+  friend class favicon::FaviconServiceImpl;
   friend class HistoryBackend;
   friend class HistoryQueryTest;
   friend class ::HistoryQuickProviderTest;
   friend class HistoryServiceTest;
   friend class ::HistoryURLProvider;
   friend class HQPPerfTestOnePopularURL;
   friend class ::InMemoryURLIndexTest;
   friend class ::SyncBookmarkDataTypeControllerTest;
   friend class ::TestingProfile;
   friend std::unique_ptr<HistoryService> CreateHistoryService(
@@ skipping 278 matching lines @@
 
   // All vended weak pointers are invalidated in Cleanup().
   base::WeakPtrFactory<HistoryService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryService);
 };
 
 }  // namespace history
 
 #endif  // COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_SERVICE_H_