Make select drop down popup RTL aware

Source/web/PopupListBox.h

 /*
  * Copyright (c) 2011, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 110 matching lines @@
     virtual bool handleMouseDownEvent(const PlatformMouseEvent&) OVERRIDE;
     virtual bool handleMouseMoveEvent(const PlatformMouseEvent&) OVERRIDE;
     virtual bool handleMouseReleaseEvent(const PlatformMouseEvent&) OVERRIDE;
     virtual bool handleWheelEvent(const PlatformWheelEvent&) OVERRIDE;
     virtual bool handleKeyEvent(const PlatformKeyboardEvent&) OVERRIDE;
     virtual bool handleTouchEvent(const PlatformTouchEvent&) OVERRIDE;
     virtual bool handleGestureEvent(const PlatformGestureEvent&) OVERRIDE;
 
     // ScrollView
     virtual HostWindow* hostWindow() const OVERRIDE;
+    virtual bool shouldPlaceVerticalScrollbarOnLeft() const OVERRIDE;
 
     // PopupListBox methods
 
     // Closes the popup
     void abandon();
 
     // Updates our internal list to match the client.
     void updateFromElement();
 
     // Frees any allocated resources used in a particular popup session.
@@ skipping 153 matching lines @@
     // If width exeeds screen width, we have to clip it.
     int m_maxWindowWidth;
 
     // To forward last mouse release event.
     RefPtr<Element> m_focusedElement;
 };
 
 } // namespace WebCore
 
 #endif