Remove remaining use of the deprecated MessageLoopProxy

components/proximity_auth/ble/proximity_auth_ble_system.cc

 // Copyright 2015 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 "components/proximity_auth/ble/proximity_auth_ble_system.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
-#include "base/message_loop/message_loop_proxy.h"
+#include "base/thread_task_runner_handle.h"
 #include "components/proximity_auth/ble/bluetooth_low_energy_connection.h"
 #include "components/proximity_auth/ble/bluetooth_low_energy_connection_finder.h"
 #include "components/proximity_auth/ble/fake_wire_message.h"
 #include "components/proximity_auth/connection.h"
 #include "components/proximity_auth/remote_device.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_gatt_connection.h"
 
 namespace proximity_auth {
 
@@ skipping 155 matching lines @@
       VLOG(1) << "Polling stopped";
       is_polling_screen_state_ = false;
       return;
     }
 
     // Sends message requesting screen state.
     connection_->SendMessage(
         make_scoped_ptr(new FakeWireMessage(kPollScreenState)));
 
     // Schedules the next message in |kPollingIntervalSeconds| ms.
-    base::MessageLoopProxy::current()->PostDelayedTask(
+    base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
         FROM_HERE, base::Bind(&ProximityAuthBleSystem::StartPollingScreenState,
                               weak_ptr_factory_.GetWeakPtr()),
         base::TimeDelta::FromSeconds(kPollingIntervalSeconds));
   }
 }
 
 void ProximityAuthBleSystem::StopPollingScreenState() {
   is_polling_screen_state_ = false;
 }
 
 }  // namespace proximity_auth