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

ipc/ipc_sync_channel_unittest.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.
 //
 // Unit test for SyncChannel.
 
 #include "ipc/ipc_sync_channel.h"
 
 #include <string>
 #include <vector>
@@ skipping 66 matching lines @@
     ListenerThread()->message_loop()->PostTask(
         FROM_HERE, base::Bind(&Worker::OnListenerThreadShutdown1, this,
                               &listener_done, &ipc_done));
     listener_done.Wait();
     ipc_done.Wait();
     ipc_thread_.Stop();
     listener_thread_.Stop();
   }
   void AddRef() { }
   void Release() { }
-  static bool ImplementsThreadSafeReferenceCounting() { return true; }
   bool Send(Message* msg) { return channel_->Send(msg); }
   bool SendWithTimeout(Message* msg, int timeout_ms) {
     return channel_->SendWithTimeout(msg, timeout_ms);
   }
   void WaitForChannelCreation() { channel_created_->Wait(); }
   void CloseChannel() {
     DCHECK(MessageLoop::current() == ListenerThread()->message_loop());
     channel_->Close();
   }
   void Start() {
@@ skipping 1854 matching lines @@
 
 }  // namespace
 
 // Windows needs to send an out-of-band secret to verify the client end of the
 // channel. Test that we still connect correctly in that case.
 TEST_F(IPCSyncChannelTest, Verified) {
   Verified();
 }
 
 }  // namespace IPC