A tricky fix for Issue 1845....

chrome/common/render_messages_internal.h

 // Copyright (c) 2006-2008 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 <string>
 #include <vector>
 
 #include "build/build_config.h"
 
 #include "base/clipboard.h"
 #include "base/gfx/rect.h"
 #include "base/gfx/native_widget_types.h"
 #include "base/shared_memory.h"
 #include "chrome/common/ipc_message_macros.h"
 #include "chrome/common/transport_dib.h"
 #include "skia/include/SkBitmap.h"
 #include "webkit/glue/console_message_level.h"
 #include "webkit/glue/dom_operations.h"
 #include "webkit/glue/screen_info.h"
 #include "webkit/glue/webcursor.h"
 #include "webkit/glue/webinputevent.h"
 #include "webkit/glue/webplugin.h"
+#include "webkit/glue/webtextdirection.h"
 
 // TODO(mpcomplete): rename ViewMsg and ViewHostMsg to something that makes
 // more sense with our current design.
 
 //-----------------------------------------------------------------------------
 // RenderView messages
 // These are messages sent from the browser to the renderer process.
 
 IPC_BEGIN_MESSAGES(View)
   // Used typically when recovering from a crash.  The new rendering process
@@ skipping 467 matching lines @@
                              error code*/)
 
   IPC_MESSAGE_ROUTED3(ViewMsg_NotifyAudioStreamVolume,
                       int /* stream id */,
                       double /* left channel */,
                       double /* right channel */)
 
   // Notification that a move or resize renderer's containing window has
   // started.
   IPC_MESSAGE_ROUTED0(ViewMsg_MoveOrResizeStarted)
+
+  // Changes the text direction of a selected input field.
+  // * direction (WebTextDirection)
+  //   Represents the new text direction.
+  //   Its possible values are listed below:
+  //     Value                      New Text Direction
+  //     WEB_TEXT_DIRECTION_DEFAULT NaturalWritingDirection ("inherit")
+  //     WEB_TEXT_DIRECTION_LTR     LeftToRightWritingDirection ("rtl")
+  //     WEB_TEXT_DIRECTION_RTL     RightToLeftWritingDirection ("ltr")
+  IPC_MESSAGE_ROUTED1(ViewMsg_SetTextDirection,
+                      WebTextDirection /* direction */)
+
 IPC_END_MESSAGES(View)
 
 
 //-----------------------------------------------------------------------------
 // WebContents messages
 // These are messages sent from the renderer to the browser process.
 
 IPC_BEGIN_MESSAGES(ViewHost)
   // Sent by the renderer when it is creating a new window.  The browser creates
   // a tab for it and responds with a ViewMsg_CreatingNew_ACK.  If route_id is
@@ skipping 695 matching lines @@
 
   // Wraps an IPC message that's destined to the worker on the renderer->browser
   // hop.
   IPC_MESSAGE_CONTROL1(ViewHostMsg_ForwardToWorker,
                        IPC::Message /* message */)
 
   // Notification when new feeds have been discovered on the page.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_UpdateFeedList,
                       ViewHostMsg_UpdateFeedList_Params)
 IPC_END_MESSAGES(ViewHost)