Return the WebViewFrameWidget in RenderWidget::webwidget() if there

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 2612 matching lines @@
     frame_widget_->setIsTransparent(!opaque);
   if (compositor_)
     compositor_->setHasTransparentBackground(!opaque);
 }
 
 void RenderViewImpl::OnSetActive(bool active) {
   if (webview())
     webview()->setIsActive(active);
 }
 
+blink::WebWidget* RenderViewImpl::webwidget() const {

[esprehn, 2016/09/01 00:37:58]

webWidget ? or widget() ?

+  if (frame_widget_)

[dcheng, 2016/08/31 18:00:33]

Should't this always be non-null while we're calling this function?

+    return frame_widget_;
+
+  return RenderWidget::webwidget();
+}
+
 void RenderViewImpl::CloseForFrame() {
   DCHECK(frame_widget_);
   frame_widget_->close();
   frame_widget_ = nullptr;
 }
 
 void RenderViewImpl::Close() {
   // We need to grab a pointer to the doomed WebView before we destroy it.
   WebView* doomed = webview_;
   RenderWidget::Close();
@@ skipping 437 matching lines @@
         return render_frame->focused_pepper_plugin();
     }
     frame = frame->traverseNext(false);
   }
 
   return nullptr;
 }
 #endif
 
 }  // namespace content