Extract minimal RenderViewHost interface for embedders, leaving

chrome/browser/extensions/extension_tabs_module.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 "chrome/browser/extensions/extension_tabs_module.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/base64.h"
@@ skipping 1235 matching lines @@
       ExtensionMsg_ExecuteCode_Params params;
       params.request_id = request_id();
       params.extension_id = extension_id();
       params.is_javascript = true;
       params.code = url.path();
       params.all_frames = false;
       params.in_main_world = true;
 
       RenderViewHost* render_view_host = web_contents_->GetRenderViewHost();
       render_view_host->Send(
-          new ExtensionMsg_ExecuteCode(render_view_host->routing_id(),
+          new ExtensionMsg_ExecuteCode(render_view_host->GetRoutingID(),
                                        params));
 
       Observe(web_contents_);
       AddRef();  // Balanced in OnExecuteCodeFinished().
 
       is_async = true;
     }
 
     controller.LoadURL(
         url, content::Referrer(), content::PAGE_TRANSITION_LINK, std::string());
@@ skipping 306 matching lines @@
       error_ = keys::kTabStripNotEditableError;
       return false;
     }
 
     // Close the tab in this convoluted way, since there's a chance that the tab
     // is being dragged, or we're in some other nested event loop. This code
     // path should ensure that the tab is safely closed under such
     // circumstances, whereas |Browser::CloseTabContents()| does not.
     RenderViewHost* render_view_host =
         contents->web_contents()->GetRenderViewHost();
-    render_view_host->delegate()->Close(render_view_host);
+    render_view_host->GetDelegate()->Close(render_view_host);
   }
   return true;
 }
 
 bool CaptureVisibleTabFunction::RunImpl() {
   Browser* browser = NULL;
   // windowId defaults to "current" window.
   int window_id = extension_misc::kCurrentWindowId;
 
   if (HasOptionalArgument(0))
@@ skipping 209 matching lines @@
   // called for every API call the extension made.
   GotLanguage(language);
 }
 
 void DetectTabLanguageFunction::GotLanguage(const std::string& language) {
   result_.reset(Value::CreateStringValue(language.c_str()));
   SendResponse(true);
 
   Release();  // Balanced in Run()
 }