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 6c765226b6d8dddc0d88f774853300290a12a413..773a425b3f8e75e3eb6812e3c82365ca4229056c 100644
--- a/media/capture/video/linux/v4l2_capture_delegate.cc
+++ b/media/capture/video/linux/v4l2_capture_delegate.cc
@@ -620,8 +620,12 @@ 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;