[Mojo Video Capture] Adapt video_capture service to refactored video capture stack

services/video_capture/test/mock_device_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/mock_device_test.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "media/capture/video/video_capture_jpeg_decoder.h"
+#include "media/capture/video/video_capture_system_impl.h"
+
+using testing::_;
+using testing::Invoke;
+using testing::InvokeWithoutArgs;
 
 namespace {
 
 std::unique_ptr<media::VideoCaptureJpegDecoder> CreateJpegDecoder() {
   return nullptr;
 }
 
 }  // anonymous namespace
 
 namespace video_capture {
 
 MockDevice::MockDevice() = default;
 
 MockDevice::~MockDevice() = default;
 
+void MockDevice::SendStubFrame(const media::VideoCaptureFormat& format,
+                               int rotation,
+                               int frame_id) {
+  auto stub_frame = media::VideoFrame::CreateZeroInitializedFrame(
+      format.pixel_format, format.frame_size,
+      gfx::Rect(format.frame_size.width(), format.frame_size.height()),
+      format.frame_size, base::TimeDelta());
+  client_->OnIncomingCapturedData(
+      stub_frame->data(0),
+      static_cast<int>(media::VideoFrame::AllocationSize(
+          stub_frame->format(), stub_frame->coded_size())),
+      format, rotation, base::TimeTicks(), base::TimeDelta(), frame_id);
+}
+
 void MockDevice::AllocateAndStart(const media::VideoCaptureParams& params,
                                   std::unique_ptr<Client> client) {
+  client_ = std::move(client);
   DoAllocateAndStart(params, &client);
 }
 
+void MockDevice::StopAndDeAllocate() {
+  DoStopAndDeAllocate();
+  client_.reset();
+}
+
 void MockDevice::GetPhotoCapabilities(GetPhotoCapabilitiesCallback callback) {
   DoGetPhotoCapabilities(&callback);
 }
 
 void MockDevice::SetPhotoOptions(media::mojom::PhotoSettingsPtr settings,
                                  SetPhotoOptionsCallback callback) {
   DoSetPhotoOptions(&settings, &callback);
 }
 
 void MockDevice::TakePhoto(TakePhotoCallback callback) {
   DoTakePhoto(&callback);
 }
 
 MockDeviceTest::MockDeviceTest() = default;
 
 MockDeviceTest::~MockDeviceTest() = default;
 
 void MockDeviceTest::SetUp() {
   message_loop_ = base::MakeUnique<base::MessageLoop>();
   auto mock_device_factory = base::MakeUnique<MockDeviceFactory>();
   // We keep a pointer to the MockDeviceFactory as a member so that we can
   // invoke its AddMockDevice(). Ownership of the MockDeviceFactory is moved
   // to the DeviceFactoryMediaToMojoAdapter.
   mock_device_factory_ = mock_device_factory.get();
+  auto video_capture_system = base::MakeUnique<media::VideoCaptureSystemImpl>(
+      std::move(mock_device_factory));
   mock_device_factory_adapter_ =
       base::MakeUnique<DeviceFactoryMediaToMojoAdapter>(
-          std::move(mock_device_factory), base::Bind(CreateJpegDecoder));
+          std::move(video_capture_system), base::Bind(CreateJpegDecoder));
 
   mock_factory_binding_ = base::MakeUnique<mojo::Binding<mojom::DeviceFactory>>(
       mock_device_factory_adapter_.get(), mojo::MakeRequest(&factory_));
 
   media::VideoCaptureDeviceDescriptor mock_descriptor;
   mock_descriptor.device_id = "MockDeviceId";
   mock_device_factory_->AddMockDevice(&mock_device_, mock_descriptor);
 
   // Obtain the mock device from the factory
+  base::RunLoop wait_loop;
+  EXPECT_CALL(device_infos_receiver_, Run(_))
+      .WillOnce(InvokeWithoutArgs([&wait_loop]() { wait_loop.Quit(); }));
+  factory_->GetDeviceInfos(device_infos_receiver_.Get());
+  // We must wait for the response to GetDeviceInfos before calling
+  // CreateDevice.
+  wait_loop.Run();
   factory_->CreateDevice(
       mock_descriptor.device_id, mojo::MakeRequest(&device_proxy_),
       base::Bind([](mojom::DeviceAccessResultCode result_code) {}));
 
   requested_settings_.requested_format.frame_size = gfx::Size(800, 600);
   requested_settings_.requested_format.frame_rate = 15;
   requested_settings_.resolution_change_policy =
       media::RESOLUTION_POLICY_FIXED_RESOLUTION;
   requested_settings_.power_line_frequency =
       media::PowerLineFrequency::FREQUENCY_DEFAULT;
 
   mock_receiver_ =
       base::MakeUnique<MockReceiver>(mojo::MakeRequest(&mock_receiver_proxy_));
 }
 
 }  // namespace video_capture