Purge ImplementsThreadSafeReferenceCounting() from the codebase now that Task is dead.

chrome_frame/chrome_frame_activex_base.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_FRAME_CHROME_FRAME_ACTIVEX_BASE_H_
 #define CHROME_FRAME_CHROME_FRAME_ACTIVEX_BASE_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <atlctl.h>
@@ skipping 360 matching lines @@
   // of this template should implement this method based on how
   // it "feels" from a security perspective. If it's hosted in another
   // scriptable document, return true, else false.
   //
   // The base implementation returns true unless we are in privileged
   // mode, in which case we always trust our container so we return false.
   bool is_frame_busting_enabled() const {
     return !is_privileged();
   }
 
-  // Needed to support PostTask.
-  static bool ImplementsThreadSafeReferenceCounting() {
-    return true;
-  }
-
   static void BringWebBrowserWindowToTop(IWebBrowser2* web_browser2) {
     DCHECK(web_browser2);
     if (web_browser2) {
       web_browser2->put_Visible(VARIANT_TRUE);
       HWND ie_window = NULL;
       web_browser2->get_HWND(reinterpret_cast<long*>(&ie_window));
       ::BringWindowToTop(ie_window);
     }
   }
 
@@ skipping 828 matching lines @@
   EventHandlers onreadystatechanged_;
   EventHandlers onprivatemessage_;
   EventHandlers onextensionready_;
 
   // Handle network requests when host network stack is used. Passed to the
   // automation client on initialization.
   scoped_ptr<UrlmonUrlRequestManager> url_fetcher_;
 };
 
 #endif  // CHROME_FRAME_CHROME_FRAME_ACTIVEX_BASE_H_