Cleanup: Remove unneeded forward declarations in webkit/.

webkit/tools/test_shell/simple_resource_loader_bridge.h

 // Copyright (c) 2011 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 WEBKIT_TOOLS_TEST_SHELL_SIMPLE_RESOURCE_LOADER_BRIDGE_H__
 #define WEBKIT_TOOLS_TEST_SHELL_SIMPLE_RESOURCE_LOADER_BRIDGE_H__
 
 #include <string>
 #include "base/message_loop_proxy.h"
 #include "net/http/http_cache.h"
 
 class FilePath;
 class GURL;
-class TestShellRequestContext;
 
 class SimpleResourceLoaderBridge {
  public:
   // Call this function to initialize the simple resource loader bridge.
   // It is safe to call this function multiple times.
   //
   // NOTE: If this function is not called, then a default request context will
   // be initialized lazily.
   //
   static void Init(const FilePath& cache_path,
@@ skipping 23 matching lines @@
   // If yes, when the request url uses file scheme and matches sub string
   // |file_path_template|, SimpleResourceLoaderBridge will use |http_prefix|
   // plus string of after |file_path_template| in original request URl to
   // generate a new http URL to get the data and send back to peer.
   // That is how we implement file-over-http feature.
   static void AllowFileOverHTTP(const std::string& file_path_template,
                                 const GURL& http_prefix);
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_SIMPLE_RESOURCE_LOADER_BRIDGE_H__