A tricky fix for Issue 1845....

webkit/glue/webwidget.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.
 
 #ifndef WEBKIT_GLUE_WEBWIDGET_H__
 #define WEBKIT_GLUE_WEBWIDGET_H__
 
 #include "skia/ext/platform_canvas.h"
+#include "webkit/glue/webtextdirection.h"
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 class WebInputEvent;
 class WebWidgetDelegate;
 
 class WebWidget {
@@ skipping 38 matching lines @@
 
   // Called to inform the webwidget of a composition event from IMM
   // (Input Method Manager).
   virtual bool ImeSetComposition(int string_type, int cursor_position,
                                  int target_start, int target_end,
                                  const std::wstring& ime_string) = 0;
 
   // Retrieve the status of this widget required by IME APIs.
   virtual bool ImeUpdateStatus(bool* enable_ime, gfx::Rect* caret_rect) = 0;
 
+  // Changes the text direction of the selected input node.
+  virtual void SetTextDirection(WebTextDirection direction) = 0;
+
  protected:
   virtual ~WebWidget() {}
 
  private:
   DISALLOW_EVIL_CONSTRUCTORS(WebWidget);
 };
 
 #endif  // #ifndef WEBKIT_GLUE_WEBWIDGET_H__