[Mojo Video Capture] Stop service when last client disconnects.

services/video_capture/test/fake_device_descriptor_test.cc

 // Copyright 2016 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 "services/video_capture/test/fake_device_descriptor_test.h"
 
 #include "base/run_loop.h"
 
 using testing::_;
 using testing::Invoke;
 
 namespace video_capture {
 
 FakeDeviceDescriptorTest::FakeDeviceDescriptorTest()
-    : video_capture::ServiceTest() {}
+    : video_capture::DeviceFactoryProviderTest() {}
 
 FakeDeviceDescriptorTest::~FakeDeviceDescriptorTest() = default;
 
 void FakeDeviceDescriptorTest::SetUp() {
-  video_capture::ServiceTest::SetUp();
+  video_capture::DeviceFactoryProviderTest::SetUp();
 
   base::RunLoop wait_loop;
   EXPECT_CALL(device_info_receiver_, Run(_))
       .WillOnce(
           Invoke([this, &wait_loop](
                      const std::vector<media::VideoCaptureDeviceInfo>& infos) {
             fake_device_info_ = infos[0];
             wait_loop.Quit();
           }));
   factory_->GetDeviceInfos(device_info_receiver_.Get());
   wait_loop.Run();
 }
 
 }  // namespace video_capture