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

services/video_capture/test/mock_device_test.cc

Index: services/video_capture/test/mock_device_test.cc
diff --git a/services/video_capture/test/mock_device_test.cc b/services/video_capture/test/mock_device_test.cc
index 9b976347c8012c0a736465a0d8039fd5ffa4adeb..8b526503c50fd0013ab4bbf547fdf63bc6741a8d 100644
--- a/services/video_capture/test/mock_device_test.cc
+++ b/services/video_capture/test/mock_device_test.cc
@@ -7,6 +7,11 @@
 #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 {
 
@@ -22,11 +27,31 @@ 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);
 }
@@ -51,9 +76,11 @@ void MockDeviceTest::SetUp() {
   // 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_));
@@ -63,6 +90,13 @@ void MockDeviceTest::SetUp() {
   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) {}));