If location services are turned off, have the BT chooser prompt the user to turn them on.

device/bluetooth/test/bluetooth_test_android.h

 // 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.
 
 #ifndef DEVICE_BLUETOOTH_TEST_BLUETOOTH_TEST_ANDROID_H_
 #define DEVICE_BLUETOOTH_TEST_BLUETOOTH_TEST_ANDROID_H_
 
 #include <stdint.h>
 
 #include "base/android/scoped_java_ref.h"
@@ skipping 77 matching lines @@
       BluetoothRemoteGattDescriptor* descriptor) override;
 
   void SimulateGattDescriptorWrite(
       BluetoothRemoteGattDescriptor* descriptor) override;
   void SimulateGattDescriptorWriteError(
       BluetoothRemoteGattDescriptor* descriptor,
       BluetoothRemoteGattService::GattErrorCode) override;
   void SimulateGattDescriptorWriteWillFailSynchronouslyOnce(
       BluetoothRemoteGattDescriptor* descriptor) override;
 
+  // Instruct the fake adapter to claim that location services are off for the
+  // device.
+  void SimulateLocationServicesOff();
+
   // Instruct the fake adapter to throw an IllegalStateException for
   // startScan and stopScan.
   void ForceIllegalStateException();
 
   // Records that Java FakeBluetoothDevice connectGatt was called.
   void OnFakeBluetoothDeviceConnectGattCalled(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& caller);
 
   // Records that Java FakeBluetoothGatt disconnect was called.
@@ skipping 50 matching lines @@
   int gatt_open_connections_ = 0;
   BluetoothRemoteGattDescriptor* remembered_ccc_descriptor_ = nullptr;
 };
 
 // Defines common test fixture name. Use TEST_F(BluetoothTest, YourTestName).
 typedef BluetoothTestAndroid BluetoothTest;
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_TEST_BLUETOOTH_TEST_ANDROID_H_