Adds IDBKeyPath parser / extractor, and provides a mechanism to call it sandboxed.

chrome/common/render_messages_internal.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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <map>
 #include <string>
@@ skipping 23 matching lines @@
 #endif
 
 // TODO(mpcomplete): rename ViewMsg and ViewHostMsg to something that makes
 // more sense with our current design.
 
 // IPC_MESSAGE macros choke on extra , in the std::map, when expanding. We need
 // to typedef it to avoid that.
 // Substitution map for l10n messages.
 typedef std::map<std::string, std::string> SubstitutionMap;
 
+class SerializedScriptValue;
 class SkBitmap;
 struct ThumbnailScore;
 class WebCursor;
 
 namespace IPC {
 struct ChannelHandle;
 class Message;
 }
 
 //-----------------------------------------------------------------------------
@@ skipping 2567 matching lines @@
 
   // A RenderView requests to start receiving device orientation updates.
   IPC_MESSAGE_CONTROL1(ViewHostMsg_DeviceOrientation_StartUpdating,
                        int /* render_view_id */)
 
   // A RenderView requests to stop receiving device orientation updates.
   IPC_MESSAGE_CONTROL1(ViewHostMsg_DeviceOrientation_StopUpdating,
                        int /* render_view_id */)
 
 IPC_END_MESSAGES(ViewHost)