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

components/invalidation/impl/sync_system_resources.h

 // Copyright 2014 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.
 //
-// Simple system resources class that uses the current message loop
-// for scheduling.  Assumes the current message loop is already
-// running.
+// Simple system resources class that uses the current thread for scheduling.
+// Assumes the current thread is already running tasks.
 
 #ifndef COMPONENTS_INVALIDATION_IMPL_SYNC_SYSTEM_RESOURCES_H_
 #define COMPONENTS_INVALIDATION_IMPL_SYNC_SYSTEM_RESOURCES_H_
 
 #include <memory>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
-#include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/values.h"
 #include "components/invalidation/impl/state_writer.h"
 #include "components/invalidation/public/invalidation_export.h"
 #include "components/invalidation/public/invalidator_state.h"
 #include "google/cacheinvalidation/include/system-resources.h"
 #include "jingle/notifier/base/notifier_options.h"
 
 namespace syncer {
 
@@ skipping 35 matching lines @@
 
   void SetSystemResources(invalidation::SystemResources* resources) override;
 
  private:
   // Runs the task, deletes it, and removes it from |posted_tasks_|.
   void RunPostedTask(invalidation::Closure* task);
 
   // Holds all posted tasks that have not yet been run.
   std::set<invalidation::Closure*> posted_tasks_;
 
-  const base::MessageLoop* created_on_loop_;
+  scoped_refptr<base::SingleThreadTaskRunner> const created_on_task_runner_;
   bool is_started_;
   bool is_stopped_;
 
   base::WeakPtrFactory<SyncInvalidationScheduler> weak_factory_;
 };
 
 // SyncNetworkChannel implements common tasks needed to interact with
 // invalidation library:
 //  - registering message and network status callbacks
 //  - notifying observers about network channel state change
@@ skipping 154 matching lines @@
   std::unique_ptr<SyncInvalidationScheduler> internal_scheduler_;
   std::unique_ptr<SyncInvalidationScheduler> listener_scheduler_;
   std::unique_ptr<SyncStorage> storage_;
   // sync_network_channel_ is owned by SyncInvalidationListener.
   SyncNetworkChannel* sync_network_channel_;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_INVALIDATION_IMPL_SYNC_SYSTEM_RESOURCES_H_