[Mojo Video Capture] Add test ReceiveFramesFromFakeCaptureDevice

services/video_capture/mock_device_factory.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/mock_device_factory.h"
 
 #include <sstream>
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "media/capture/video/fake_video_capture_device.h"
 #include "services/video_capture/device_mock_to_media_adapter.h"
 
+namespace {
+// Report a single hard-coded supported format to clients.
+media::VideoCaptureFormat kSupportedFormat(gfx::Size(),
+                                           25.0f,
+                                           media::PIXEL_FORMAT_I420,
+                                           media::PIXEL_STORAGE_CPU);
+}
+
 namespace video_capture {
 
 MockDeviceFactory::MockDeviceFactory() = default;
 
 MockDeviceFactory::~MockDeviceFactory() = default;
 
 void MockDeviceFactory::AddMockDevice(
     mojom::MockVideoCaptureDevicePtr device,
     const media::VideoCaptureDeviceDescriptor& descriptor) {
   devices_[descriptor] = std::move(device);
@@ skipping 10 matching lines @@
 
 void MockDeviceFactory::GetDeviceDescriptors(
     media::VideoCaptureDeviceDescriptors* device_descriptors) {
   for (const auto& entry : devices_)
     device_descriptors->push_back(entry.first);
 }
 
 void MockDeviceFactory::GetSupportedFormats(
     const media::VideoCaptureDeviceDescriptor& device_descriptor,
     media::VideoCaptureFormats* supported_formats) {
-  NOTIMPLEMENTED();
+  supported_formats->push_back(kSupportedFormat);
 }
 
 }  // namespace video_capture