The first step for enabling off-the-spot IME on Pepper on ChromeOS/Linux.

content/renderer/pepper_plugin_delegate_impl.h

 // Copyright (c) 2011 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 CONTENT_RENDERER_PEPPER_PLUGIN_DELEGATE_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_PLUGIN_DELEGATE_IMPL_H_
 #pragma once
 
 #include <set>
 #include <map>
@@ skipping 143 matching lines @@
                                    base::ProcessHandle broker_process_handle,
                                    const IPC::ChannelHandle& handle);
 
   // Removes broker from pending_connect_broker_ if present. Returns true if so.
   bool StopWaitingForPpapiBrokerConnection(PpapiBrokerImpl* broker);
 
   // Notification that the render view has been focused or defocused. This
   // notifies all of the plugins.
   void OnSetFocus(bool has_focus);
 
+  // Returns whether or not a Pepper plugin is focused.
+  bool IsPluginFocused() const;
+
   // PluginDelegate implementation.
+  virtual void PluginFocusChanged(bool focused) OVERRIDE;
   virtual void PluginCrashed(webkit::ppapi::PluginInstance* instance);
   virtual void InstanceCreated(
       webkit::ppapi::PluginInstance* instance);
   virtual void InstanceDeleted(
       webkit::ppapi::PluginInstance* instance);
   virtual SkBitmap* GetSadPluginBitmap();
   virtual PlatformAudio* CreateAudio(
       uint32_t sample_rate,
       uint32_t sample_count,
       PlatformAudio::Client* client);
@@ skipping 120 matching lines @@
 
   IDMap<scoped_refptr<webkit::ppapi::PPB_Flash_NetConnector_Impl>,
         IDMapOwnPointer> pending_connect_tcps_;
 
   IDMap<scoped_refptr<webkit::ppapi::PPB_Flash_Menu_Impl>,
         IDMapOwnPointer> pending_context_menus_;
 
   typedef IDMap<scoped_refptr<PpapiBrokerImpl>, IDMapOwnPointer> BrokerMap;
   BrokerMap pending_connect_broker_;
 
+  // Whether or not the focus is on a PPAPI plugin
+  bool is_pepper_plugin_focused_;
+
   DISALLOW_COPY_AND_ASSIGN(PepperPluginDelegateImpl);
 };
 
 #endif  // CONTENT_RENDERER_PEPPER_PLUGIN_DELEGATE_IMPL_H_