Revert of Move compositor InputHandler from RenderViewImpl to RenderWidget.

third_party/WebKit/Source/web/tests/FrameTestHelpers.cpp

 /*
  * Copyright (C) 2011 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 332 matching lines @@
 
 WebLayerTreeView* TestWebViewClient::initializeLayerTreeView() {
   m_layerTreeView = WTF::wrapUnique(new WebLayerTreeViewImplForTesting);
   return m_layerTreeView.get();
 }
 
 WebLayerTreeView* TestWebViewWidgetClient::initializeLayerTreeView() {
   return m_testWebViewClient->initializeLayerTreeView();
 }
 
-WebLayerTreeView* TestWebWidgetClient::initializeLayerTreeView() {
-  m_layerTreeView = WTF::makeUnique<WebLayerTreeViewImplForTesting>();
-  return m_layerTreeView.get();
-}
-
 void TestWebViewWidgetClient::scheduleAnimation() {
   m_testWebViewClient->scheduleAnimation();
 }
 
 void TestWebViewWidgetClient::didMeaningfulLayout(
     WebMeaningfulLayout layoutType) {
   m_testWebViewClient->didMeaningfulLayout(layoutType);
 }
 
 }  // namespace FrameTestHelpers
 }  // namespace blink