Remove most of Widget (FrameViewBase) class from HTMLPlugInElement.

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

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. 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
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 142 matching lines @@
   return DocumentLoader::create(frame, request, substituteData,
                                 clientRedirectPolicy);
 }
 
 LocalFrame* EmptyLocalFrameClient::createFrame(const FrameLoadRequest&,
                                                const AtomicString&,
                                                HTMLFrameOwnerElement*) {
   return nullptr;
 }
 
-FrameViewBase* EmptyLocalFrameClient::createPlugin(HTMLPlugInElement*,
-                                                   const KURL&,
-                                                   const Vector<String>&,
-                                                   const Vector<String>&,
-                                                   const String&,
-                                                   bool,
-                                                   DetachedPluginPolicy) {
+PluginView* EmptyLocalFrameClient::createPlugin(HTMLPlugInElement*,
+                                                const KURL&,
+                                                const Vector<String>&,
+                                                const Vector<String>&,
+                                                const String&,
+                                                bool,
+                                                DetachedPluginPolicy) {
   return nullptr;
 }
 
 std::unique_ptr<WebMediaPlayer> EmptyLocalFrameClient::createWebMediaPlayer(
     HTMLMediaElement&,
     const WebMediaPlayerSource&,
     WebMediaPlayerClient*) {
   return nullptr;
 }
 
@@ skipping 13 matching lines @@
 
 std::unique_ptr<WebApplicationCacheHost>
 EmptyLocalFrameClient::createApplicationCacheHost(
     WebApplicationCacheHostClient*) {
   return nullptr;
 }
 
 EmptyRemoteFrameClient::EmptyRemoteFrameClient() = default;
 
 }  // namespace blink