Remove most of Widget (FrameViewBase) class from HTMLPlugInElement.

third_party/WebKit/Source/web/LocalFrameClientImpl.h

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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.
@@ skipping 129 matching lines @@
                                        const ResourceRequest&,
                                        const SubstituteData&,
                                        ClientRedirectPolicy) override;
   WTF::String userAgent() override;
   WTF::String doNotTrackValue() override;
   void transitionToCommittedForNewPage() override;
   LocalFrame* createFrame(const FrameLoadRequest&,
                           const WTF::AtomicString& name,
                           HTMLFrameOwnerElement*) override;
   virtual bool canCreatePluginWithoutRenderer(const String& mimeType) const;
-  FrameViewBase* createPlugin(HTMLPlugInElement*,
-                              const KURL&,
-                              const Vector<WTF::String>&,
-                              const Vector<WTF::String>&,
-                              const WTF::String&,
-                              bool loadManually,
-                              DetachedPluginPolicy) override;
+  PluginView* createPlugin(HTMLPlugInElement*,
+                           const KURL&,
+                           const Vector<WTF::String>&,
+                           const Vector<WTF::String>&,
+                           const WTF::String&,
+                           bool loadManually,
+                           DetachedPluginPolicy) override;
   std::unique_ptr<WebMediaPlayer> createWebMediaPlayer(
       HTMLMediaElement&,
       const WebMediaPlayerSource&,
       WebMediaPlayerClient*) override;
   WebRemotePlaybackClient* createWebRemotePlaybackClient(
       HTMLMediaElement&) override;
   ObjectContentType getObjectContentType(
       const KURL&,
       const WTF::String& mimeType,
       bool shouldPreferPlugInsForImages) override;
@@ skipping 73 matching lines @@
 
 DEFINE_TYPE_CASTS(LocalFrameClientImpl,
                   LocalFrameClient,
                   client,
                   client->isLocalFrameClientImpl(),
                   client.isLocalFrameClientImpl());
 
 }  // namespace blink
 
 #endif