[DevTools] Add toolbox web contents to show in undocked mode.

chrome/browser/ui/cocoa/browser_window_controller_private.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/browser_window_controller_private.h"
 
 #include <cmath>
 
 #include "base/command_line.h"
 #import "base/mac/scoped_nsobject.h"
@@ skipping 982 matching lines @@
 
   BOOL allowOverlappingViews =
       [self shouldAllowOverlappingViews:inPresentationMode];
 
   // The rendering path with overlapping views disabled causes bugs when
   // transitioning between composited and non-composited mode.
   // http://crbug.com/279472
   allowOverlappingViews = YES;
   contents->SetAllowOverlappingViews(allowOverlappingViews);
 
-  DevToolsWindow* devToolsWindow =
-      DevToolsWindow::GetDockedInstanceForInspectedTab(contents);
-  if (devToolsWindow) {
-    devToolsWindow->web_contents()->
-        SetAllowOverlappingViews(allowOverlappingViews);
-  }
+  WebContents* devTools = DevToolsWindow::GetInTabWebContents(contents, NULL);
+  if (devTools)
+    devTools->SetAllowOverlappingViews(allowOverlappingViews);
 }
 
 - (void)updateInfoBarTipVisibility {
   // If there's no toolbar then hide the infobar tip.
   [infoBarContainerController_
       setShouldSuppressTopInfoBarTip:![self hasToolbar]];
 }
 
 @end  // @implementation BrowserWindowController(Private)