Looks like the max-downscaling-image implementation is sensitive to ordering of layout and image loading.

Any progress on this?

I hit this in two consecutive tryjob runs today:
https://ci.chromium.org/p/chromium/builders/luci.chromium.try/win7_chromium_rel_ng/21000 and https://ci.chromium.org/p/chromium/builders/luci.chromium.try/win7_chromium_rel_ng/21046

This is affecting the commit queue. The test should be disabled temporarily if it can't be fixed promptly.

Also images/feature-policy-max-downscaling-image.html
https://ci.chromium.org/p/chromium/builders/luci.chromium.try/win7_chromium_rel_ng/21765

I uploaded a fix >1d ago [1], but reviewer response was slower than anticipated.

[1] https://chromium-review.googlesource.com/c/chromium/src/+/1107805

-Sheriff-Chromium since the CL is now in the CQ

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d55393ffee0e5612c8fcc3d314c57044f76cbdd1

commit d55393ffee0e5612c8fcc3d314c57044f76cbdd1
Author: Fredrik Söderquist <fs@opera.com>
Date: Fri Jun 22 00:09:18 2018

Update/recompute the is-downscaled flag when image loading finishes

If the <img> is layouted before the referenced image finishes loading
(and has dimensions available) and also has specified width and height,
then the |LayoutImage::is_downscaled_image_| will not be set correctly.
Also update said flag in LayoutImage::ImageNotifyFinished.

Bug:  854464 
Change-Id: Iee9ad62dff436a0ef4d4a390902309159acb7cb7
Reviewed-on: https://chromium-review.googlesource.com/1107805
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: Chris Harrelson <chrishtr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569462}
[add] https://crrev.com/d55393ffee0e5612c8fcc3d314c57044f76cbdd1/third_party/WebKit/LayoutTests/images/feature-policy-max-downscaling-image-forced-layout-expected.html
[add] https://crrev.com/d55393ffee0e5612c8fcc3d314c57044f76cbdd1/third_party/WebKit/LayoutTests/images/feature-policy-max-downscaling-image-forced-layout.html
[add] https://crrev.com/d55393ffee0e5612c8fcc3d314c57044f76cbdd1/third_party/WebKit/LayoutTests/images/resources/frame-with-max-downscaling-image-test-images-forced-layout.html
[modify] https://crrev.com/d55393ffee0e5612c8fcc3d314c57044f76cbdd1/third_party/blink/renderer/core/layout/layout_image.cc