[Mojo Video Capture] Implement a VideoCaptureProvider using the Mojo service (part 1)

content/browser/renderer_host/media/mojo_service_launched_video_capture_device.h

+// Copyright 2017 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 CONTENT_BROWSER_RENDERER_HOST_MEDIA_MOJO_SERVICE_LAUNCHED_VIDEO_CAPTURE_DEVICE_H_
+#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MOJO_SERVICE_LAUNCHED_VIDEO_CAPTURE_DEVICE_H_
+
+#include "content/browser/renderer_host/media/video_capture_provider.h"
+#include "services/video_capture/public/interfaces/device.mojom.h"
+
+namespace content {
+
+// Implementation of LaunchedVideoCaptureDevice that uses the "video_capture"
+// Mojo service.
+class MojoServiceLaunchedVideoCaptureDevice

[mcasas, 2017/05/02 01:06:23]

Suggestion: no need for "Service" in the name, "Mojo" is
sufficient to convey that we have no control as to where 
it is implemented, it could be in process or out of process
(as a matter of fact if you use the flag --single-process,
everything is bundled up into one giant process !)

[chfremer, 2017/05/02 16:36:42]

I don't feel strongly about this, but would like to push back renaming files to
the end of my stashed changes.

To me, including the word "service" makes sense, because I believe things can be
use Mojo for communication/interfaces without being a service.

@Ken, what's your view on this? 

If we agree on a better name, I will add the renaming task to my backlog.

+    : public LaunchedVideoCaptureDevice {
+ public:
+  MojoServiceLaunchedVideoCaptureDevice(video_capture::mojom::DevicePtr device);
+  ~MojoServiceLaunchedVideoCaptureDevice() override;
+
+  // LaunchedVideoCaptureDevice implementation.
+  void GetPhotoCapabilities(
+      media::VideoCaptureDevice::GetPhotoCapabilitiesCallback callback)
+      const override;
+  void SetPhotoOptions(
+      media::mojom::PhotoSettingsPtr settings,
+      media::VideoCaptureDevice::SetPhotoOptionsCallback callback) override;
+  void TakePhoto(
+      media::VideoCaptureDevice::TakePhotoCallback callback) override;
+  void MaybeSuspendDevice() override;
+  void ResumeDevice() override;
+  void RequestRefreshFrame() override;
+
+  void SetDesktopCaptureWindowIdAsync(gfx::NativeViewId window_id,
+                                      base::OnceClosure done_cb) override;
+
+  void OnUtilizationReport(int frame_feedback_id, double utilization) override;
+
+ private:
+  video_capture::mojom::DevicePtr device_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MOJO_SERVICE_LAUNCHED_VIDEO_CAPTURE_DEVICE_H_