Update Mac plugin IME handling to match updated spec

chrome/plugin/webplugin_proxy.h

 // Copyright (c) 2010 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 CHROME_PLUGIN_WEBPLUGIN_PROXY_H_
 #define CHROME_PLUGIN_WEBPLUGIN_PROXY_H_
 #pragma once
 
 #include <string>
 
@@ skipping 129 matching lines @@
   virtual void CancelDocumentLoad();
   virtual void InitiateHTTPRangeRequest(
       const char* url, const char* range_info, int range_request_id);
   virtual void SetDeferResourceLoading(unsigned long resource_id, bool defer);
   virtual bool IsOffTheRecord();
   virtual void ResourceClientDeleted(
       webkit::npapi::WebPluginResourceClient* resource_client);
   gfx::NativeViewId containing_window() { return containing_window_; }
 
 #if defined(OS_MACOSX)
-  virtual void SetImeEnabled(bool enabled);
+  virtual void FocusChanged(bool focused);
+
+  virtual void StartIme();
 
   virtual void BindFakePluginWindowHandle(bool opaque);
 
   virtual webkit::npapi::WebPluginAcceleratedSurface* GetAcceleratedSurface();
 
   // Tell the browser (via the renderer) to invalidate because the
   // accelerated buffers have changed.
   virtual void AcceleratedFrameBuffersDidSwap(
       gfx::PluginWindowHandle window, uint64 surface_id);
 
@@ skipping 74 matching lines @@
 
 #endif
 
   // Contains the routing id of the host render view.
   int host_render_view_routing_id_;
 
   ScopedRunnableMethodFactory<WebPluginProxy> runnable_method_factory_;
 };
 
 #endif  // CHROME_PLUGIN_WEBPLUGIN_PROXY_H_