Make WebUI objects not derive from WebUI. WebUI objects own the controller. This is the ownership...

chrome/browser/ui/webui/profiler_ui.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_PROFILER_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_PROFILER_UI_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/values.h"
-#include "content/browser/webui/web_ui.h"
 #include "content/public/browser/web_ui_controller.h"
 
 // The C++ back-end for the chrome://profiler webui page.
-class ProfilerUI : public WebUI, public content::WebUIController {
+class ProfilerUI : public content::WebUIController {
  public:
-  explicit ProfilerUI(content::WebContents* contents);
+  explicit ProfilerUI(WebUI* web_ui);
   virtual ~ProfilerUI();
 
   // Get the tracking data from TrackingSynchronizer.
   void GetData();
 
   // Send the data to the renderer.
   void ReceivedData(base::Value* value);
 
  private:
   // Used to get |weak_ptr_| to self on the UI thread.
   scoped_ptr<base::WeakPtrFactory<ProfilerUI> > ui_weak_ptr_factory_;
   base::WeakPtr<ProfilerUI> ui_weak_ptr_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfilerUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PROFILER_UI_H_