Make RenderFrameHostImpl::GetRenderWidgetHost() always return an object

content/browser/web_contents/web_contents_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/browser/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 2348 matching lines @@
 }
 
 void WebContentsImpl::OnMoveValidationMessage(
     const gfx::Rect& anchor_in_root_view) {
   if (delegate_)
     delegate_->MoveValidationMessage(this, anchor_in_root_view);
 }
 
 void WebContentsImpl::SendScreenRects() {
   for (FrameTreeNode* node : frame_tree_.Nodes()) {
-    if (node->current_frame_host()->GetRenderWidgetHost())
+    if (node->current_frame_host()->is_local_root())
       node->current_frame_host()->GetRenderWidgetHost()->SendScreenRects();
   }
 
   RenderWidgetHostViewBase* rwhv =
       static_cast<RenderWidgetHostViewBase*>(GetRenderWidgetHostView());
   if (rwhv) {
     SendPageMessage(new PageMsg_UpdateWindowScreenRect(
         MSG_ROUTING_NONE, rwhv->GetBoundsInRootWindow()));
   }
 
@@ skipping 2685 matching lines @@
   for (RenderViewHost* render_view_host : render_view_host_set)
     render_view_host->OnWebkitPreferencesChanged();
 }
 
 void WebContentsImpl::SetJavaScriptDialogManagerForTesting(
     JavaScriptDialogManager* dialog_manager) {
   dialog_manager_ = dialog_manager;
 }
 
 }  // namespace content