Remove obviously unneeded forward declarations in chrome/browser/[abef]*/*.h.

chrome/browser/automation/automation_provider_json.h

 // Copyright (c) 2010 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.
 
 // Support utilities for the JSON automation interface used by PyAuto.
 
 #ifndef CHROME_BROWSER_AUTOMATION_AUTOMATION_PROVIDER_JSON_H_
 #define CHROME_BROWSER_AUTOMATION_AUTOMATION_PROVIDER_JSON_H_
 #pragma once
 
 #include <string>
 
-#include "base/values.h"
-#include "ipc/ipc_message.h"
 #include "chrome/browser/automation/automation_provider.h"
 
+class Value;
+
+namespace IPC {
+class Message;
+}
+
 // Helper to ensure we always send a reply message for JSON automation requests.
 class AutomationJSONReply {
  public:
   // Creates a new reply object for the IPC message |reply_message| for
   // |provider|. The caller is expected to call SendSuccess() or SendError()
   // before destroying this object.
   AutomationJSONReply(AutomationProvider* provider,
                       IPC::Message* reply_message);
 
   ~AutomationJSONReply();
 
   // Send a success reply along with data contained in |value|.
   // An empty message will be sent if |value| is NULL.
   void SendSuccess(const Value* value);
 
   // Send an error reply along with error message |error_message|.
   void SendError(const std::string& error_message);
 
  private:
   AutomationProvider* provider_;
   IPC::Message* message_;
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_PROVIDER_JSON_H_
-