Add more functionality to WebView.

content/public/browser/web_contents_view_delegate.h

 // Copyright (c) 2012 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_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_
 #pragma once
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
@@ skipping 61 matching lines @@
   // |return_value| has been set and that value should be returned to GTK+.
   virtual gboolean OnNativeViewFocusEvent(GtkWidget* widget,
                                           GtkDirectionType type,
                                           gboolean* return_value) = 0;
 #elif defined(OS_MACOSX)
   // Returns a newly-created delegate for the RenderWidgetHostViewMac, to handle
   // events on the responder chain.
   virtual NSObject<RenderWidgetHostViewMacDelegate>*
       CreateRenderWidgetHostViewDelegate(
           RenderWidgetHost* render_widget_host) = 0;
-
-  // Notifications that the native view was created/destroyed.
-  virtual void NativeViewCreated(NSView* view) = 0;
-  virtual void NativeViewDestroyed(NSView* view) = 0;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_