Image Capture: fill in PhotoCapabilities.{height,width} in Linux/CrOs/Mac

media/capture/video/linux/v4l2_capture_delegate.cc

Index: media/capture/video/linux/v4l2_capture_delegate.cc
diff --git a/media/capture/video/linux/v4l2_capture_delegate.cc b/media/capture/video/linux/v4l2_capture_delegate.cc
index 2f16c203996b82851c6181e67ac4a3f07b96c8a6..a4677b31787666f17c96b710bb848fe097c5319c 100644
--- a/media/capture/video/linux/v4l2_capture_delegate.cc
+++ b/media/capture/video/linux/v4l2_capture_delegate.cc
@@ -619,8 +619,12 @@ void V4L2CaptureDelegate::GetPhotoCapabilities(
   }
 
   photo_capabilities->iso = mojom::Range::New();
-  photo_capabilities->height = mojom::Range::New();
-  photo_capabilities->width = mojom::Range::New();
+  photo_capabilities->height = mojom::Range::New(
+      capture_format_.frame_size.height(), capture_format_.frame_size.height(),
+      capture_format_.frame_size.height(), 0 /* step */);
+  photo_capabilities->width = mojom::Range::New(
+      capture_format_.frame_size.width(), capture_format_.frame_size.width(),
+      capture_format_.frame_size.width(), 0 /* step */);
   photo_capabilities->exposure_compensation = mojom::Range::New();
   photo_capabilities->red_eye_reduction = mojom::RedEyeReduction::NEVER;
   photo_capabilities->torch = false;