Use WebViewHelper::LocalMainFrame where possible.

third_party/WebKit/Source/web/tests/PrerenderingTest.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 163 matching lines @@
     FrameTestHelpers::LoadFrame(web_view_helper_.WebView()->MainFrameImpl(),
                                 std::string(base_url) + file_name);
   }
 
   void NavigateAway() {
     FrameTestHelpers::LoadFrame(web_view_helper_.WebView()->MainFrameImpl(),
                                 "about:blank");
   }
 
   void Close() {
-    web_view_helper_.WebView()->MainFrameImpl()->CollectGarbage();
+    web_view_helper_.LocalMainFrame()->CollectGarbage();
     web_view_helper_.Reset();
 
     WebCache::Clear();
   }
 
   Element& Console() {
     Document* document =
-        web_view_helper_.WebView()->MainFrameImpl()->GetFrame()->GetDocument();
+        web_view_helper_.LocalMainFrame()->GetFrame()->GetDocument();
     Element* console = document->getElementById("console");
     DCHECK(isHTMLUListElement(console));
     return *console;
   }
 
   unsigned ConsoleLength() { return Console().CountChildren() - 1; }
 
   WebString ConsoleAt(unsigned i) {
     DCHECK_GT(ConsoleLength(), i);
 
     Node* item = NodeTraversal::ChildAt(Console(), 1 + i);
 
     DCHECK(item);
     DCHECK(isHTMLLIElement(item));
     DCHECK(item->hasChildren());
 
     return item->textContent();
   }
 
   void ExecuteScript(const char* code) {
-    web_view_helper_.WebView()->MainFrameImpl()->ExecuteScript(
+    web_view_helper_.LocalMainFrame()->ExecuteScript(
         WebScriptSource(WebString::FromUTF8(code)));
   }
 
   TestPrerenderingSupport* PrerenderingSupport() {
     return &prerendering_support_;
   }
 
   TestPrerendererClient* PrerendererClient() { return &prerenderer_client_; }
 
  private:
@@ skipping 244 matching lines @@
   WebPrerender rel_next_and_prerender =
       PrerendererClient()->ReleaseWebPrerender();
   EXPECT_EQ(ToWebURL("http://rel-next-and-prerender.com/"),
             rel_next_and_prerender.Url());
   EXPECT_EQ(
       static_cast<unsigned>(kPrerenderRelTypeNext | kPrerenderRelTypePrerender),
       rel_next_and_prerender.RelTypes());
 }
 
 }  // namespace blink