Add supportsInputMethod() interface for WebPlugin.

Source/web/WebPluginContainerImpl.cpp

 /*
  * Copyright (C) 2009 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 571 matching lines @@
         return true;
     }
     return false;
 }
 
 bool WebPluginContainerImpl::supportsKeyboardFocus() const
 {
     return m_webPlugin->supportsKeyboardFocus();
 }
 
+bool WebPluginContainerImpl::supportsInputMethod() const
+{
+    return m_webPlugin->supportsInputMethod();
+}
+
 bool WebPluginContainerImpl::canProcessDrag() const
 {
     return m_webPlugin->canProcessDrag();
 }
 
 bool WebPluginContainerImpl::wantsWheelEvents()
 {
     return m_wantsWheelEvents;
 }
 
@@ skipping 289 matching lines @@
         // Take our element and get the clip rect from the enclosing layer and
         // frame view.
         clipRect.intersect(
             m_element->document().view()->windowClipRectForFrameOwner(m_element, true));
     }
 
     return clipRect;
 }
 
 } // namespace blink