Eliminate WebView::GetDelegate and replace RenderViewSet with a linked list o...

chrome/renderer/external_extension.cc

 // Copyright (c) 2009 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 "chrome/renderer/external_extension.h"
 #include "chrome/renderer/render_view.h"
 #include "webkit/api/public/WebFrame.h"
 
 using WebKit::WebFrame;
 
@@ skipping 27 matching lines @@
         return v8::Undefined();
 
       WebFrame* webframe = WebFrame::frameForEnteredContext();
       DCHECK(webframe) << "There should be an active frame since we just got "
                           "a native function called.";
       if (!webframe) return v8::Undefined();
 
       WebView* webview = webframe->view();
       if (!webview) return v8::Undefined();  // can happen during closing
 
-      RenderView* renderview = static_cast<RenderView*>(webview->GetDelegate());
+      RenderView* renderview = RenderView::FromWebView(webview);
       if (!renderview) return v8::Undefined();
 
       std::string name = std::string(*v8::String::Utf8Value(args[0]));
       if (!name.length()) return v8::Undefined();;
 
       renderview->AddSearchProvider(name);
       return v8::Undefined();
     }
 };
 
 v8::Extension*  ExternalExtension::Get() {
   return new ExternalExtensionWrapper();
 }
 
 }  // namespace extensions_v8