content: Cleanup class/struct forward declarations

content/browser/devtools/devtools_http_handler.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 CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_HTTP_HANDLER_H_
 #define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_HTTP_HANDLER_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/devtools_agent_host.h"
 #include "net/http/http_status_code.h"
 
-class GURL;
-
 namespace base {
 class DictionaryValue;
 class Thread;
 class Value;
 }
 
 namespace content {
 class DevToolsManagerDelegate;
 class DevToolsSocketFactory;
 }
 
 namespace net {
 class IPEndPoint;
 class HttpServerRequestInfo;
-class ServerSocket;
 }
 
 namespace content {
 
 class DevToolsAgentHostClientImpl;
-class DevToolsHttpHandlerDelegate;
 class ServerWrapper;
 
 // This class is used for managing DevTools remote debugging server.
 // Clients can connect to the specified ip:port and start debugging
 // this browser.
 class DevToolsHttpHandler {
  public:
   // Takes ownership over |socket_factory|.
   // If |frontend_url| is empty, assumes it's bundled, and uses
   // |delegate->GetFrontendResource()|.
@@ skipping 78 matching lines @@
       std::map<std::string, scoped_refptr<DevToolsAgentHost>>;
   DescriptorMap agent_host_map_;
   base::WeakPtrFactory<DevToolsHttpHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsHttpHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_HTTP_HANDLER_H_