Add ARGB to VideoCapturePixelFormat enum

http://crrev.com/1cecc36 broke DevTools eyedropper tool.

Bug: 846379
Change-Id: I812b66c32192166b3c34582bf6b63407709ba784
Reviewed-on: https://chromium-review.googlesource.com/1072034Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Saman Sami <samans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#561600}

media/capture/mojom/video_capture_types.mojom

@@ -11,7 +11,8 @@ import "ui/gfx/geometry/mojo/geometry.mojom";
 
 enum VideoCapturePixelFormat {
   I420,
-  Y16
+  Y16,
+  ARGB
 };
 
 enum ResolutionChangePolicy {

media/capture/mojom/video_capture_types_mojom_traits.cc

@@ -91,6 +91,8 @@ EnumTraits<media::mojom::VideoCapturePixelFormat,
       return media::mojom::VideoCapturePixelFormat::I420;
     case media::VideoPixelFormat::PIXEL_FORMAT_Y16:
       return media::mojom::VideoCapturePixelFormat::Y16;
+    case media::VideoPixelFormat::PIXEL_FORMAT_ARGB:
+      return media::mojom::VideoCapturePixelFormat::ARGB;
     case media::VideoPixelFormat::PIXEL_FORMAT_UNKNOWN:
     case media::VideoPixelFormat::PIXEL_FORMAT_YV12:
     case media::VideoPixelFormat::PIXEL_FORMAT_I422:
@@ -100,7 +102,6 @@ EnumTraits<media::mojom::VideoCapturePixelFormat,
     case media::VideoPixelFormat::PIXEL_FORMAT_NV21:
     case media::VideoPixelFormat::PIXEL_FORMAT_UYVY:
     case media::VideoPixelFormat::PIXEL_FORMAT_YUY2:
-    case media::VideoPixelFormat::PIXEL_FORMAT_ARGB:
     case media::VideoPixelFormat::PIXEL_FORMAT_XRGB:
     case media::VideoPixelFormat::PIXEL_FORMAT_RGB24:
     case media::VideoPixelFormat::PIXEL_FORMAT_RGB32:
@@ -136,6 +137,9 @@ bool EnumTraits<media::mojom::VideoCapturePixelFormat,
     case media::mojom::VideoCapturePixelFormat::Y16:
       *output = media::VideoPixelFormat::PIXEL_FORMAT_Y16;
       return true;
+    case media::mojom::VideoCapturePixelFormat::ARGB:
+      *output = media::VideoPixelFormat::PIXEL_FORMAT_ARGB;
+      return true;
   }
   NOTREACHED();
   return false;