Remove rootWindowRect from WebWidgetClient and move it to WebViewClient.

content/renderer/render_view_impl.cc

 // 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.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 2032 matching lines @@
 
 blink::WebLayerTreeView* RenderViewImpl::layerTreeView() {
   return RenderWidget::layerTreeView();
 }
 
 void RenderViewImpl::resetInputMethod() {
   RenderWidget::resetInputMethod();
 }
 
 blink::WebRect RenderViewImpl::rootWindowRect() {
-  return RenderWidget::rootWindowRect();
+  return RenderWidget::RootWindowRect();
 }
 
 void RenderViewImpl::scheduleAnimation() {
   RenderWidget::scheduleAnimation();
 }
 
 blink::WebScreenInfo RenderViewImpl::screenInfo() {
   return RenderWidget::screenInfo();
 }
 
@@ skipping 1176 matching lines @@
         return render_frame->focused_pepper_plugin();
     }
     frame = frame->traverseNext(false);
   }
 
   return nullptr;
 }
 #endif
 
 }  // namespace content