A tricky fix for Issue 1845....

chrome/common/render_messages_internal.h

Index: chrome/common/render_messages_internal.h
===================================================================
--- chrome/common/render_messages_internal.h	(revision 11937)
+++ chrome/common/render_messages_internal.h	(working copy)
@@ -24,6 +24,7 @@
 #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.
@@ -511,6 +512,18 @@
   // 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)