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

chrome/browser/ui/webui/devtools_ui.h

Index: chrome/browser/ui/webui/devtools_ui.h
===================================================================
--- chrome/browser/ui/webui/devtools_ui.h	(revision 117871)
+++ chrome/browser/ui/webui/devtools_ui.h	(working copy)
@@ -6,16 +6,16 @@
 #define CHROME_BROWSER_UI_WEBUI_DEVTOOLS_UI_H_
 #pragma once
 
-#include "content/browser/webui/web_ui.h"
+#include "base/compiler_specific.h"
 #include "content/public/browser/web_ui_controller.h"
 
 class Profile;
 
-class DevToolsUI : public WebUI, public content::WebUIController {
+class DevToolsUI : public content::WebUIController {
  public:
   static void RegisterDevToolsDataSource(Profile* profile);
 
-  explicit DevToolsUI(content::WebContents* contents);
+  explicit DevToolsUI(WebUI* web_ui);
 
   // WebUIController
   virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;