Make RenderFrameHostImpl::GetRenderWidgetHost() always return an object

content/browser/accessibility/dump_accessibility_browsertest_base.cc

 // Copyright 2014 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/accessibility/dump_accessibility_browsertest_base.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 249 matching lines @@
     //
     // In this scenario, B's contentWindow.location.href matches A's url,
     // but B's url in the browser frame tree is still "about:blank".
     std::string url = node->current_url().spec();
     if (url != url::kAboutBlankURL)
       all_frame_urls.push_back(url);
 
     // We won't get the correct coordinate transformations for
     // out-of-process iframes until each frame's surface is ready.
     RenderFrameHostImpl* current_frame_host = node->current_frame_host();
-    if (!current_frame_host)
+    if (!current_frame_host || !current_frame_host->is_local_root())
       continue;
-    RenderWidgetHostImpl* rwh = current_frame_host->GetRenderWidgetHost();
-    if (!rwh)
-      continue;
-    RenderWidgetHostViewBase* rwhv = rwh->GetView();
+    RenderWidgetHostViewBase* rwhv =
+        static_cast<RenderWidgetHostViewBase*>(current_frame_host->GetView());
     if (rwhv && rwhv->IsChildFrameForTesting()) {
       SurfaceHitTestReadyNotifier notifier(
           static_cast<RenderWidgetHostViewChildFrame*>(rwhv));
       notifier.WaitForSurfaceReady();
     }
   }
 
   // Wait for the accessibility tree to fully load for all frames,
   // by searching for the WEB_AREA node in the accessibility tree
   // with the url of each frame in our frame tree. Note that this
@@ skipping 100 matching lines @@
           expected_file, actual_contents.c_str(), actual_contents.size()));
       LOG(INFO) << "Wrote expectations to: "
                 << expected_file.LossyDisplayName();
     }
   } else {
     LOG(INFO) << "Test output matches expectations.";
   }
 }
 
 }  // namespace content