[Mojo Video Capture] Cleanup naming of classes/files in services/video_capture

services/video_capture/service_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/video_capture_service_test.h"
+#include "services/video_capture/service_test.h"
 
 namespace video_capture {
 
-VideoCaptureServiceTest::VideoCaptureServiceTest()
+ServiceTest::ServiceTest()
     : service_manager::test::ServiceTest("video_capture_unittests") {}
 
-VideoCaptureServiceTest::~VideoCaptureServiceTest() = default;
+ServiceTest::~ServiceTest() = default;
 
-void VideoCaptureServiceTest::SetUp() {
-  ServiceTest::SetUp();
+void ServiceTest::SetUp() {
+  service_manager::test::ServiceTest::SetUp();
   connector()->ConnectToInterface("video_capture", &service_);
   service_->ConnectToFakeDeviceFactory(mojo::GetProxy(&factory_));
 }
 
 }  // namespace video_capture