chrome: Cleanup class/struct forward declarations

chrome/renderer/chrome_content_renderer_client.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_RENDERER_CHROME_CONTENT_RENDERER_CLIENT_H_
 #define CHROME_RENDERER_CHROME_CONTENT_RENDERER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 19 matching lines @@
 #include "chrome/renderer/leak_detector/leak_detector_remote_client.h"
 #endif
 
 class ChromeRenderThreadObserver;
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 class ChromePDFPrintClient;
 #endif
 class PrescientNetworkingDispatcher;
 #if BUILDFLAG(ENABLE_SPELLCHECK)
 class SpellCheck;
-class SpellCheckProvider;
 #endif
 
 struct ChromeViewHostMsg_GetPluginInfo_Output;
 
 namespace content {
 class BrowserPluginDelegate;
 struct WebPluginInfo;
 }
 
 namespace network_hints {
 class PrescientNetworkingDispatcher;
 }
 
 namespace extensions {
-class Dispatcher;
 class Extension;
 }
 
 namespace prerender {
 class PrerenderDispatcher;
 }
 
 namespace safe_browsing {
 class PhishingClassifierFilter;
 }
 
 namespace subresource_filter {
 class RulesetDealer;
 }
 
 namespace web_cache {
 class WebCacheImpl;
 }
 
-namespace blink {
-class WebSecurityOrigin;
-}
-
 #if BUILDFLAG(ENABLE_WEBRTC)
 class WebRtcLoggingMessageFilter;
 #endif
 
 namespace internal {
 
 extern const char kFlashYouTubeRewriteUMA[];
 
 // Used for UMA. Values should not be reorderer or reused.
 // SUCCESS refers to an embed properly rewritten. SUCCESS_PARAMS_REWRITE refers
@@ skipping 168 matching lines @@
 #endif
 
 #if defined(OS_CHROMEOS)
   std::unique_ptr<LeakDetectorRemoteClient> leak_detector_remote_client_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentRendererClient);
 };
 
 #endif  // CHROME_RENDERER_CHROME_CONTENT_RENDERER_CLIENT_H_