chrome: Cleanup class/struct forward declarations

chrome/browser/profiles/profile.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.
 
 // This class gathers state related to a single user profile.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_H_
 
 #include <string>
 
 #include "base/containers/hash_tables.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "components/domain_reliability/clear_mode.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/content_browser_client.h"
 
-class ChromeAppCacheService;
 class ChromeZoomLevelPrefs;
 class DevToolsNetworkControllerHandle;
 class ExtensionSpecialStoragePolicy;
-class HostContentSettingsMap;
 class PrefProxyConfigTracker;
 class PrefService;
-class PromoCounter;
-class ProtocolHandlerRegistry;
 class TestingProfile;
 
-namespace android {
-class TabContentsProvider;
-}
-
 namespace base {
 class SequencedTaskRunner;
 class Time;
 }
 
 namespace chrome_browser_net {
 class Predictor;
 }
 
-namespace chromeos {
-class LibCrosServiceLibraryImpl;
-class ResetDefaultProxyConfigServiceTask;
-}
-
 namespace content {
 class WebUI;
 }
 
-namespace storage {
-class FileSystemContext;
-}
-
 namespace net {
 class SSLConfigService;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 // Instead of adding more members to Profile, consider creating a
 // KeyedService. See
@@ skipping 308 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(Profile);
 };
 
 // The comparator for profile pointers as key in a map.
 struct ProfileCompare {
   bool operator()(Profile* a, Profile* b) const;
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_H_