Add supportsInputMethod() interface for WebPlugin.

Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 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 91 matching lines @@
 class WebDocument;
 class WebFrameImpl;
 class WebGestureEvent;
 class WebHelperPluginImpl;
 class WebImage;
 class WebKeyboardEvent;
 class WebLayerTreeView;
 class WebMouseEvent;
 class WebMouseWheelEvent;
 class WebPagePopupImpl;
+class WebPlugin;
 class WebPrerendererClient;
 class WebSettingsImpl;
 class WebTouchEvent;
 class WorkerGlobalScopeProxyProviderImpl;
 class FullscreenController;
 
 class WebViewImpl : public WebView
     , public RefCounted<WebViewImpl>
     , public WebGestureCurveTarget
     , public WebCore::PagePopupDriver
@@ skipping 514 matching lines @@
     virtual void handleMouseDown(WebCore::Frame&, const WebMouseEvent&) OVERRIDE;
     virtual void handleMouseUp(WebCore::Frame&, const WebMouseEvent&) OVERRIDE;
     virtual bool handleMouseWheel(WebCore::Frame&, const WebMouseWheelEvent&) OVERRIDE;
     virtual bool handleGestureEvent(const WebGestureEvent&) OVERRIDE;
     virtual bool handleKeyEvent(const WebKeyboardEvent&) OVERRIDE;
     virtual bool handleCharEvent(const WebKeyboardEvent&) OVERRIDE;
 
     void closePendingHelperPlugins(WebCore::Timer<WebViewImpl>*);
 
     WebCore::InputMethodContext* inputMethodContext();
+    WebPlugin* focusedPluginIfInputMethodSupported(WebCore::Frame*);
 
     WebViewClient* m_client; // Can be 0 (e.g. unittests, shared workers, etc.)
     WebAutofillClient* m_autofillClient;
     WebPermissionClient* m_permissionClient;
     WebSpellCheckClient* m_spellCheckClient;
     WebPasswordGeneratorClient* m_passwordGeneratorClient;
 
     ChromeClientImpl m_chromeClientImpl;
     ContextMenuClientImpl m_contextMenuClientImpl;
     DragClientImpl m_dragClientImpl;
@@ skipping 172 matching lines @@
 inline WebViewImpl* toWebViewImpl(WebView* webView)
 {
     // We have no ways to check if the specified WebView is an instance of
     // WebViewImpl because WebViewImpl is the only implementation of WebView.
     return static_cast<WebViewImpl*>(webView);
 }
 
 } // namespace blink
 
 #endif