bluetooth: android: Fix a couple of crashes when adapter is turned on/off.

device/bluetooth/bluetooth_adapter_android.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 "device/bluetooth/bluetooth_adapter_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/sequenced_task_runner.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 59 matching lines @@
 }
 
 bool BluetoothAdapterAndroid::IsPowered() const {
   return Java_ChromeBluetoothAdapter_isPowered(AttachCurrentThread(),
                                                j_adapter_.obj());
 }
 
 void BluetoothAdapterAndroid::SetPowered(bool powered,
                                          const base::Closure& callback,
                                          const ErrorCallback& error_callback) {
-  NOTIMPLEMENTED();
+  if (Java_ChromeBluetoothAdapter_setPowered(AttachCurrentThread(),
+                                             j_adapter_.obj(), powered)) {
+    callback.Run();
+  } else {
+    error_callback.Run();
+  }
 }
 
 bool BluetoothAdapterAndroid::IsDiscoverable() const {
   return Java_ChromeBluetoothAdapter_isDiscoverable(AttachCurrentThread(),
                                                     j_adapter_.obj());
 }
 
 void BluetoothAdapterAndroid::SetDiscoverable(
     bool discoverable,
     const base::Closure& callback,
@@ skipping 116 matching lines @@
   // TODO(scheib): Support filters crbug.com/490401
   NOTIMPLEMENTED();
   error_callback.Run(UMABluetoothDiscoverySessionOutcome::NOT_IMPLEMENTED);
 }
 
 void BluetoothAdapterAndroid::RemovePairingDelegateInternal(
     device::BluetoothDevice::PairingDelegate* pairing_delegate) {
 }
 
 }  // namespace device