Avoid retaining the pointer to inspected WebContents in DevToolsWindow

chrome/browser/devtools/devtools_window.h

 // 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.
 
 #ifndef CHROME_BROWSER_DEVTOOLS_DEVTOOLS_WINDOW_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_WINDOW_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 93 matching lines @@
 
   // Stores preferred devtools window width for this instance.
   void SetWidth(int width);
 
   // Stores preferred devtools window height for this instance.
   void SetHeight(int height);
 
  private:
   friend class DevToolsControllerTest;
   static DevToolsWindow* Create(Profile* profile,
-                                content::RenderViewHost* inspected_rvh,
                                 DevToolsDockSide dock_side,
                                 bool shared_worker_frontend);
   DevToolsWindow(content::WebContents* web_contents,
                  Profile* profile,
-                 content::RenderViewHost* inspected_rvh,
                  DevToolsDockSide dock_side);
 
+  content::WebContents* GetInspectedWebContents();
+
   void CreateDevToolsBrowser();
   bool FindInspectedBrowserAndTabIndex(Browser**, int* tab);
   BrowserWindow* GetInspectedBrowserWindow();
   bool IsInspectedBrowserPopupOrPanel();
   void UpdateFrontendDockSide();
 
   // Overridden from content::NotificationObserver.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
@@ skipping 60 matching lines @@
   void FileSystemAdded(std::string error_string,
                        const DevToolsFileHelper::FileSystem& file_system);
 
   void UpdateBrowserToolbar();
   bool IsDocked();
   static DevToolsDockSide GetDockSideFromPrefs(Profile* profile);
   static std::string SideToString(DevToolsDockSide dock_side);
   static DevToolsDockSide SideFromString(const std::string& dock_side);
 
   Profile* profile_;
-  content::WebContents* inspected_web_contents_;
   content::WebContents* web_contents_;
   Browser* browser_;
   DevToolsDockSide dock_side_;
   bool is_loaded_;
   DevToolsToggleAction action_on_load_;
   content::NotificationRegistrar registrar_;
   scoped_ptr<content::DevToolsClientHost> frontend_host_;
   base::WeakPtrFactory<DevToolsWindow> weak_factory_;
   scoped_ptr<DevToolsFileHelper> file_helper_;
   int width_;
   int height_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsWindow);
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_WINDOW_H_