Move didMeaningfulLayout calls from WebViewClient to WebWidgetClient.

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 2014 matching lines @@
 }
 
 void RenderViewImpl::didChangeCursor(const blink::WebCursorInfo& info) {
   RenderWidget::didChangeCursor(info);
 }
 
 void RenderViewImpl::didInvalidateRect(const blink::WebRect& rect) {
   RenderWidget::didInvalidateRect(rect);
 }
 
-void RenderViewImpl::didMeaningfulLayout(
-    blink::WebMeaningfulLayout layout_type) {
-  RenderWidget::didMeaningfulLayout(layout_type);
-}
-
 void RenderViewImpl::didOverscroll(
     const blink::WebFloatSize& overscrollDelta,
     const blink::WebFloatSize& accumulatedOverscroll,
     const blink::WebFloatPoint& positionInViewport,
     const blink::WebFloatSize& velocityInViewport) {
   RenderWidget::didOverscroll(overscrollDelta, accumulatedOverscroll,
                               positionInViewport, velocityInViewport);
 }
 
 void RenderViewImpl::didUpdateTextOfFocusedElementByNonUserInput() {
@@ skipping 1211 matching lines @@
         return render_frame->focused_pepper_plugin();
     }
     frame = frame->traverseNext(false);
   }
 
   return nullptr;
 }
 #endif
 
 }  // namespace content