Removes indexed_db_param_traits.h depedencies on WebKit headers.

chrome/common/utility_messages_internal.h

 // Copyright (c) 2009 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.
 
 #include <string>
 #include <vector>
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard. It is included by utility_messages_internal.h
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 // This file needs to be included again, even though we're actually included
 // from it via utility_messages.h.
 #include "ipc/ipc_message_macros.h"
 
 #include "base/platform_file.h"
 #include "gfx/rect.h"
 #include "printing/native_metafile.h"
 #include "printing/page_range.h"
 
 class FilePath;
+class IndexedDBKey;
+class SerializedScriptValue;
 class SkBitmap;
 
 //------------------------------------------------------------------------------
 // Utility process messages:
 // These are messages from the browser to the utility process.
 IPC_BEGIN_MESSAGES(Utility)
 
   // Tell the utility process to unpack the given extension file in its
   // directory and verify that it is valid.
   IPC_MESSAGE_CONTROL1(UtilityMsg_UnpackExtension,
@@ skipping 100 matching lines @@
   IPC_MESSAGE_CONTROL2(UtilityHostMsg_IDBKeysFromValuesAndKeyPath_Succeeded,
                        int /* id */,
                        std::vector<IndexedDBKey> /* value */)
 
   // Reply when the utility process has failed in obtaining the value for
   // IDBKeyPath.
   IPC_MESSAGE_CONTROL1(UtilityHostMsg_IDBKeysFromValuesAndKeyPath_Failed,
                        int /* id */)
 
 IPC_END_MESSAGES(UtilityHost)