Layout tests for this at https://codereview.chromium.org/2176153002

At the moment it crashes due to  issue 630983 .

The layout test actually shows transferSize being correct but decodedBodySize and encodedBodySize both being 8469 for a 12242 byte image.

I have modified the title of the bug to match.

Firefox manages to return reasonable results for this test.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d0441c41caadbe2029de72434ae7712dccf03662

commit d0441c41caadbe2029de72434ae7712dccf03662
Author: ricea <ricea@chromium.org>
Date: Mon Aug 01 11:15:14 2016

Layout test of PerformanceResourceTiming for multipart

PerformanceResourceTiming fields should be correctly initialised for
multipart images.

They are not, so this CL includes an expectation that
the test will fail.

BUG= 631004 

Review-Url: https://codereview.chromium.org/2176153002
Cr-Commit-Position: refs/heads/master@{#408938}

[add] https://crrev.com/d0441c41caadbe2029de72434ae7712dccf03662/third_party/WebKit/LayoutTests/http/tests/misc/resource-timing-sizes-multipart.html

Background: onload is fired at the end of the first frame for multipart images, for backwards compatibility. The PerformanceResourceTiming object is created at the same time. However, the image in the test only has one frame, so it's still mysterious that the sizes come out wrong.

This bug is essentially to track the issue. It's unlikely anyone will fix this, except by deprecating multipart/x-mixed-replace images altogether.

What's the status of this bug? Do we have plan to deprecate multipart/x-mixed-replace images?

#8 entry.encodedBodySize and entry.decodedBodySize no longer return nonsense values, so I will update the layout test.

As far as I know, we are no closer to being able to deprecate multipart/x-mixed-replace images.

Actually, now that all the fields have reasonable values, I think I can mark this issue as fixed.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4461b89aec5ffc3d25493e76bfdf0267a9c6181f

commit 4461b89aec5ffc3d25493e76bfdf0267a9c6181f
Author: Adam Rice <ricea@chromium.org>
Date: Mon May 07 05:23:44 2018

Re-enable disabled checks in resource-timing-sizes-multipart.html

The checks of entry.encodedBodySize and entry.decodedBodySize in the
http/tests/misc/resource-timing-sizes-multipart.html layout test were
disabled because the values of those fields were nonsense.

Those fields now have meaningful values, so re-enable the checks.

BUG= 631004 

Change-Id: Id7902c194d03b4f26b9bdab5c891aa21cbddd01c
Reviewed-on: https://chromium-review.googlesource.com/1036965
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Commit-Queue: Adam Rice <ricea@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556379}
[modify] https://crrev.com/4461b89aec5ffc3d25493e76bfdf0267a9c6181f/third_party/WebKit/LayoutTests/http/tests/misc/resource-timing-sizes-multipart.html

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b450ddb8349f62bea05765ab5e7fb1de960664c7

commit b450ddb8349f62bea05765ab5e7fb1de960664c7
Author: Adam Rice <ricea@chromium.org>
Date: Wed May 09 07:07:06 2018

Make bufferedAmount unsigned long long

WebSocket bufferedAmount is defined in the HTML standard as being
unsigned long long
(https://html.spec.whatwg.org/#the-websocket-interface), but Blink has
been using "unsigned long" for this value.

Change to "unsigned long long". This also permits us to remove the check
for overflow.

BUG= 631004 

Change-Id: I6c6cc356d9b3c425306376e210b9df7a3be13998
Reviewed-on: https://chromium-review.googlesource.com/1037105
Commit-Queue: Adam Rice <ricea@chromium.org>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557114}
[modify] https://crrev.com/b450ddb8349f62bea05765ab5e7fb1de960664c7/third_party/blink/renderer/modules/websockets/dom_websocket.cc
[modify] https://crrev.com/b450ddb8349f62bea05765ab5e7fb1de960664c7/third_party/blink/renderer/modules/websockets/dom_websocket.h
[modify] https://crrev.com/b450ddb8349f62bea05765ab5e7fb1de960664c7/third_party/blink/renderer/modules/websockets/websocket.idl