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

chrome_frame/test/url_request_test.cc

 // 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.
 
 #include <atlbase.h>
 #include <atlcom.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/win/scoped_com_initializer.h"
@@ skipping 31 matching lines @@
   MOCK_METHOD8(OnResponseStarted, void(int request_id, const char* mime_type,
       const char* headers, int size, base::Time last_modified,
       const std::string& redirect_url, int redirect_status,
       const net::HostPortPair& socket_address));
   MOCK_METHOD2(OnReadComplete, void(int request_id, const std::string& data));
   MOCK_METHOD2(OnResponseEnd, void(int request_id,
                                    const net::URLRequestStatus& status));
   MOCK_METHOD4(OnCookiesRetrieved, void(bool success, const GURL& url,
       const std::string& cookie, int cookie_id));
 
-  static bool ImplementsThreadSafeReferenceCounting() {
-    return false;
-  }
-
   void PostponeReadRequest(chrome_frame_test::TimedMsgLoop* loop,
                    UrlmonUrlRequest* request, int bytes_to_read) {
     loop->PostTask(FROM_HERE,
                    base::Bind(&MockUrlDelegate::RequestRead,
                               base::Unretained(this), request, bytes_to_read));
   }
 
  private:
   void RequestRead(UrlmonUrlRequest* request, int bytes_to_read) {
     request->Read(bytes_to_read);
@@ skipping 250 matching lines @@
   EXPECT_CALL(mock, OnReadComplete(1, testing::_))
     .Times(0);
 
   EXPECT_CALL(mock, OnResponseEnd(1, testing::_))
     .Times(0);
 
   mgr->StartUrlRequest(1, r1);
   loop.RunFor(kChromeFrameLongNavigationTimeout);
   mgr.reset();
 }