Fix docking behaviour for devtools windows that don't have an associated browser window

chrome/browser/debugger/devtools_window.h

 // 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.
 
 #ifndef CHROME_BROWSER_DEBUGGER_DEVTOOLS_WINDOW_H_
 #define CHROME_BROWSER_DEBUGGER_DEVTOOLS_WINDOW_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 34 matching lines @@
   void SetDocked(bool docked);
   RenderViewHost* GetRenderViewHost();
 
   TabContents* tab_contents() { return tab_contents_; }
   Browser* browser() { return browser_; } //  For tests.
   bool is_docked() { return docked_; }
 
  private:
   void CreateDevToolsBrowser();
   BrowserWindow* GetInspectedBrowserWindow();
+  void SetAttachedWindow();
 
   // Overridden from NotificationObserver.
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   void OpenConsole();
 
   // Overridden from TabContentsDelegate.
   virtual void OpenURLFromTab(TabContents* source,
@@ skipping 26 matching lines @@
   TabContents* tab_contents_;
   Browser* browser_;
   bool docked_;
   bool is_loaded_;
   bool open_console_on_load_;
   NotificationRegistrar registrar_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsWindow);
 };
 
 #endif  // CHROME_BROWSER_DEBUGGER_DEVTOOLS_WINDOW_H_