Remove most of Widget (FrameViewBase) class from HTMLPlugInElement.

third_party/WebKit/Source/core/loader/EmptyClients.h

 /*
  * Copyright (C) 2006 Eric Seidel (eric@webkit.org)
  * Copyright (C) 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 308 matching lines @@
   void didRunInsecureContent(SecurityOrigin*, const KURL&) override {}
   void didDetectXSS(const KURL&, bool) override {}
   void didDispatchPingLoader(const KURL&) override {}
   void didDisplayContentWithCertificateErrors(const KURL&) override {}
   void didRunContentWithCertificateErrors(const KURL&) override {}
   void selectorMatchChanged(const Vector<String>&,
                             const Vector<String>&) override {}
   LocalFrame* createFrame(const FrameLoadRequest&,
                           const AtomicString&,
                           HTMLFrameOwnerElement*) override;
-  FrameViewBase* createPlugin(HTMLPlugInElement*,
-                              const KURL&,
-                              const Vector<String>&,
-                              const Vector<String>&,
-                              const String&,
-                              bool,
-                              DetachedPluginPolicy) override;
+  PluginView* createPlugin(HTMLPlugInElement*,
+                           const KURL&,
+                           const Vector<String>&,
+                           const Vector<String>&,
+                           const String&,
+                           bool,
+                           DetachedPluginPolicy) override;
   bool canCreatePluginWithoutRenderer(const String& mimeType) const override {
     return false;
   }
   std::unique_ptr<WebMediaPlayer> createWebMediaPlayer(
       HTMLMediaElement&,
       const WebMediaPlayerSource&,
       WebMediaPlayerClient*) override;
   WebRemotePlaybackClient* createWebRemotePlaybackClient(
       HTMLMediaElement&) override;
 
@@ skipping 123 matching lines @@
   Frame* nextSibling() const override { return nullptr; }
   Frame* firstChild() const override { return nullptr; }
   void frameFocused() const override {}
 };
 
 CORE_EXPORT void fillWithEmptyClients(Page::PageClients&);
 
 }  // namespace blink
 
 #endif  // EmptyClients_h