Remove use of deprecated MessageLoop methods in device.

device/bluetooth/bluetooth_remote_gatt_characteristic_android.cc

Index: device/bluetooth/bluetooth_remote_gatt_characteristic_android.cc
diff --git a/device/bluetooth/bluetooth_remote_gatt_characteristic_android.cc b/device/bluetooth/bluetooth_remote_gatt_characteristic_android.cc
index 8195119eeef79d0e4eaee02e47e299cd4796a2d3..2e3b81d9881124318b6f1131cdf3b067b1c0449a 100644
--- a/device/bluetooth/bluetooth_remote_gatt_characteristic_android.cc
+++ b/device/bluetooth/bluetooth_remote_gatt_characteristic_android.cc
@@ -10,8 +10,10 @@
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
+#include "base/location.h"
 #include "base/logging.h"
-#include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "device/bluetooth/bluetooth_adapter_android.h"
 #include "device/bluetooth/bluetooth_gatt_notify_session_android.h"
 #include "device/bluetooth/bluetooth_remote_gatt_descriptor_android.h"
@@ -140,7 +142,7 @@ void BluetoothRemoteGattCharacteristicAndroid::StartNotifySession(
 
   if (!hasNotify && !hasIndicate) {
     LOG(ERROR) << "Characteristic needs NOTIFY or INDICATE";
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(error_callback,
                    BluetoothRemoteGattService::GATT_ERROR_NOT_SUPPORTED));
@@ -154,7 +156,7 @@ void BluetoothRemoteGattCharacteristicAndroid::StartNotifySession(
   if (ccc_descriptor.size() != 1u) {
     LOG(ERROR) << "Found " << ccc_descriptor.size()
                << " client characteristic configuration descriptors.";
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(error_callback,
                    (ccc_descriptor.size() == 0)
@@ -166,7 +168,7 @@ void BluetoothRemoteGattCharacteristicAndroid::StartNotifySession(
   if (!Java_ChromeBluetoothRemoteGattCharacteristic_setCharacteristicNotification(
           AttachCurrentThread(), j_characteristic_.obj(), true)) {
     LOG(ERROR) << "Error enabling characteristic notification";
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(error_callback,
                               BluetoothRemoteGattService::GATT_ERROR_FAILED));
     return;
@@ -190,7 +192,7 @@ void BluetoothRemoteGattCharacteristicAndroid::ReadRemoteCharacteristic(
     const ValueCallback& callback,
     const ErrorCallback& error_callback) {
   if (read_pending_ || write_pending_) {
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(error_callback,
                    BluetoothRemoteGattService::GATT_ERROR_IN_PROGRESS));
@@ -199,7 +201,7 @@ void BluetoothRemoteGattCharacteristicAndroid::ReadRemoteCharacteristic(
 
   if (!Java_ChromeBluetoothRemoteGattCharacteristic_readRemoteCharacteristic(
           AttachCurrentThread(), j_characteristic_.obj())) {
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(error_callback,
                               BluetoothRemoteGattService::GATT_ERROR_FAILED));
     return;
@@ -215,7 +217,7 @@ void BluetoothRemoteGattCharacteristicAndroid::WriteRemoteCharacteristic(
     const base::Closure& callback,
     const ErrorCallback& error_callback) {
   if (read_pending_ || write_pending_) {
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(error_callback,
                    BluetoothRemoteGattService::GATT_ERROR_IN_PROGRESS));
@@ -226,7 +228,7 @@ void BluetoothRemoteGattCharacteristicAndroid::WriteRemoteCharacteristic(
   if (!Java_ChromeBluetoothRemoteGattCharacteristic_writeRemoteCharacteristic(
           env, j_characteristic_.obj(),
           base::android::ToJavaByteArray(env, new_value).obj())) {
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(error_callback,
                               BluetoothRemoteGattService::GATT_ERROR_FAILED));
     return;