Video Capture Mojo (1.4b): Implement ability to use fake device instance

services/video_capture/mock_device_descriptor_receiver.h

+// 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.
+
+#ifndef SERVICES_VIDEO_CAPTURE_MOCK_DEVICE_DESCRIPTOR_RECEIVER_H_
+#define SERVICES_VIDEO_CAPTURE_MOCK_DEVICE_DESCRIPTOR_RECEIVER_H_
+
+#include "services/video_capture/public/interfaces/video_capture_device_factory.mojom.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace video_capture {
+
+class MockDeviceDescriptorReceiver {
+ public:
+  MockDeviceDescriptorReceiver();
+  ~MockDeviceDescriptorReceiver();

[mcasas, 2016/08/31 21:10:35]

Since this class has no member variables, consider moving the .cc
definitions in here.

[chfremer, 2016/08/31 21:49:43]

Tried this, and compiler complains that Complex class/struct needs an explicit
out-of-line constructor and destructor.
Not sure why, but I assume that the MOCK_METHOD1 somehow causes the class to be
considered "Complex".

+
+  // Use forwarding method to work around gmock not supporting move-only types.
+  void HandleEnumerateDeviceDescriptorsCallback(
+      std::vector<mojom::VideoCaptureDeviceDescriptorPtr> descriptors);
+
+  MOCK_METHOD1(
+      OnEnumerateDeviceDescriptorsCallback,
+      void(const std::vector<mojom::VideoCaptureDeviceDescriptorPtr>&));
+};
+
+}  // namespace video_capture
+
+#endif  // SERVICES_VIDEO_CAPTURE_MOCK_DEVICE_DESCRIPTOR_RECEIVER_H_