Remove calls to MessageLoop::current() in sync.

sync/internal_api/public/http_bridge.h

 // Copyright 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 SYNC_INTERNAL_API_PUBLIC_HTTP_BRIDGE_H_
 #define SYNC_INTERNAL_API_PUBLIC_HTTP_BRIDGE_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/threading/thread_checker.h"
 #include "base/timer/timer.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/cancelation_observer.h"
 #include "sync/internal_api/public/http_post_provider_factory.h"
 #include "sync/internal_api/public/http_post_provider_interface.h"
 #include "sync/internal_api/public/network_time_update_callback.h"
 #include "url/gurl.h"
 
 class HttpBridgeTest;
 
-namespace base {
-class MessageLoop;
-}
-
 namespace net {
 class HttpResponseHeaders;
 class HttpUserAgentSettings;
 class URLFetcher;
 class URLRequestJobFactory;
 }
 
 namespace syncer {
 
 class CancelationSignal;
@@ skipping 63 matching lines @@
   // callbacks coming from the IO thread en route to finally destroying the
   // fetcher.
   void DestroyURLFetcherOnIOThread(net::URLFetcher* fetcher,
                                    base::Timer* fetch_timer);
 
   void UpdateNetworkTime();
 
   // Helper method to abort the request if we timed out.
   void OnURLFetchTimedOut();
 
-  // The message loop of the thread we were created on. This is the thread that
-  // will block on MakeSynchronousPost while the IO thread fetches data from
-  // the network.
+  // Used to check whether a method runs on the thread that we were created on.
+  // This is the thread that will block on MakeSynchronousPost while the IO
+  // thread fetches data from the network.
   // This should be the main syncer thread (SyncerThread) which is what blocks
   // on network IO through curl_easy_perform.
-  base::MessageLoop* const created_on_loop_;
+  base::ThreadChecker thread_checker_;
 
   // The user agent for all requests.
   const std::string user_agent_;
 
   // The URL to POST to.
   GURL url_for_request_;
 
   // POST payload information.
   std::string content_type_;
   std::string request_content_;
@@ skipping 93 matching lines @@
   // A callback to tag Sync request to be able to record data use of this
   // service by data_use_measurement component.
   BindToTrackerCallback bind_to_tracker_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpBridgeFactory);
 };
 
 }  //  namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_HTTP_BRIDGE_H_