Replace MessageLoopProxy with ThreadTaskRunnerHandle in src/sync/.

sync/tools/sync_client.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 <cstddef>
 #include <cstdio>
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
@@ skipping 64 matching lines @@
         new net::TransportSecurityState());
     Init();
   }
 
   virtual ~MyTestURLRequestContext() {}
 };
 
 class MyTestURLRequestContextGetter : public net::TestURLRequestContextGetter {
  public:
   explicit MyTestURLRequestContextGetter(
-      const scoped_refptr<base::MessageLoopProxy>& io_message_loop_proxy)
-      : TestURLRequestContextGetter(io_message_loop_proxy) {}
+      const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner)
+      : TestURLRequestContextGetter(io_task_runner) {}
 
   virtual net::TestURLRequestContext* GetURLRequestContext() OVERRIDE {
     // Construct |context_| lazily so it gets constructed on the right
     // thread (the IO thread).
     if (!context_)
       context_.reset(new MyTestURLRequestContext());
     return context_.get();
   }
 
  private:
@@ skipping 367 matching lines @@
   io_thread.Stop();
   return 0;
 }
 
 }  // namespace
 }  // namespace syncer
 
 int main(int argc, char* argv[]) {
   return syncer::SyncClientMain(argc, argv);
 }