VideoCapture: migrate VideoCapture renderer-->host messages to mojo, part 2

services/video_capture/public/interfaces/video_capture_device_proxy_traits.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/public/interfaces/video_capture_device_proxy_traits.h"
+
+namespace mojo {
+
+// static
+video_capture::mojom::ResolutionChangePolicy
+EnumTraits<video_capture::mojom::ResolutionChangePolicy,
+           media::ResolutionChangePolicy>::ToMojom(media::ResolutionChangePolicy
+                                                       input) {
+  switch (input) {
+    case media::RESOLUTION_POLICY_FIXED_RESOLUTION:
+      return video_capture::mojom::ResolutionChangePolicy::FIXED_RESOLUTION;
+    case media::RESOLUTION_POLICY_FIXED_ASPECT_RATIO:
+      return video_capture::mojom::ResolutionChangePolicy::FIXED_ASPECT_RATIO;
+    case media::RESOLUTION_POLICY_ANY_WITHIN_LIMIT:
+      return video_capture::mojom::ResolutionChangePolicy::ANY_WITHIN_LIMIT;
+  }
+  NOTREACHED();
+  return video_capture::mojom::ResolutionChangePolicy::FIXED_RESOLUTION;
+}
+
+// static
+bool EnumTraits<video_capture::mojom::ResolutionChangePolicy,
+                media::ResolutionChangePolicy>::
+    FromMojom(video_capture::mojom::ResolutionChangePolicy input,
+              media::ResolutionChangePolicy* output) {
+  switch (input) {
+    case video_capture::mojom::ResolutionChangePolicy::FIXED_RESOLUTION:
+      *output = media::RESOLUTION_POLICY_FIXED_RESOLUTION;
+      return true;
+    case video_capture::mojom::ResolutionChangePolicy::FIXED_ASPECT_RATIO:
+      *output = media::RESOLUTION_POLICY_FIXED_ASPECT_RATIO;
+      return true;
+    case video_capture::mojom::ResolutionChangePolicy::ANY_WITHIN_LIMIT:
+      *output = media::RESOLUTION_POLICY_ANY_WITHIN_LIMIT;
+      return true;
+  }
+  NOTREACHED();
+  return false;
+}
+
+// static
+video_capture::mojom::PowerLineFrequency EnumTraits<
+    video_capture::mojom::PowerLineFrequency,
+    media::PowerLineFrequency>::ToMojom(media::PowerLineFrequency input) {
+  switch (input) {
+    case media::PowerLineFrequency::FREQUENCY_DEFAULT:
+      return video_capture::mojom::PowerLineFrequency::DEFAULT;
+    case media::PowerLineFrequency::FREQUENCY_50HZ:
+      return video_capture::mojom::PowerLineFrequency::HZ_50;
+    case media::PowerLineFrequency::FREQUENCY_60HZ:
+      return video_capture::mojom::PowerLineFrequency::HZ_60;
+  }
+  NOTREACHED();
+  return video_capture::mojom::PowerLineFrequency::DEFAULT;
+}
+
+// static
+bool EnumTraits<video_capture::mojom::PowerLineFrequency,
+                media::PowerLineFrequency>::
+    FromMojom(video_capture::mojom::PowerLineFrequency input,
+              media::PowerLineFrequency* output) {
+  switch (input) {
+    case video_capture::mojom::PowerLineFrequency::DEFAULT:
+      *output = media::PowerLineFrequency::FREQUENCY_DEFAULT;
+      return true;
+    case video_capture::mojom::PowerLineFrequency::HZ_50:
+      *output = media::PowerLineFrequency::FREQUENCY_50HZ;
+      return true;
+    case video_capture::mojom::PowerLineFrequency::HZ_60:
+      *output = media::PowerLineFrequency::FREQUENCY_60HZ;
+      return true;
+  }
+  NOTREACHED();
+  return false;
+}
+
+}  // namespace mojo