Remove Chrome Frame's delay shutdown field trial.

chrome/browser/automation/chrome_frame_automation_provider_win.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.
 
 // This implements a browser-side endpoint for ChromeFrame UI automation
 // activity. The client-side endpoint is implemented by
 // ChromeFrameAutomationClient.
 // The entire lifetime of this object should be contained within that of
 // the BrowserProcess
 
@@ skipping 15 matching lines @@
   // IPC::Listener overrides.
   virtual bool OnMessageReceived(const IPC::Message& message);
 
  protected:
   // This function is called when we receive an invalid message type.
   virtual void OnUnhandledMessage(const IPC::Message& message);
 
   // Returns true if the message received is a valid chrome frame message.
   bool IsValidMessage(uint32 type);
 
-  // Called to release an instance's ref count on the global BrowserProcess
-  // instance.
-  static void ReleaseBrowserProcess();
-
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeFrameAutomationProvider);
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_CHROME_FRAME_AUTOMATION_PROVIDER_WIN_H_