Import wpt@e183d8671bde035c7a0168a75119a5f80bd592cb

Using wpt-import in Chromium 40bbe3ee5fc19df9f86146f5d357aaf198d3dcce.
With Chromium commits locally applied on WPT:
8bb5e943be "Add WPT to verify that 1XX responses are used to provide responseStart timing"
618e62b560 "Align resource timing buffer full processing to spec PR 168 (take 3)"
1c633d483b "Snap the snapped_dest_rect for backgrounds"
6b1262920a "lazy-load: Increase timeout value to reduce flakes"


Note to sheriffs: This CL imports external tests and adds
expectations for those tests; if this CL is large and causes
a few new failures, please fix the failures by adding new
lines to TestExpectations rather than reverting. See:
https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md

Directory owners for changes in this CL:
hbos@chromium.org, hta@chromium.org:
  external/wpt/webrtc

NOAUTOREVERT=true
TBR=robertma

No-Export: true
Change-Id: I9a7268521df7e70187340a7bda8e0f7d9e8f4e70
Reviewed-on: https://chromium-review.googlesource.com/c/1379213
Reviewed-by: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#616918}
3 files changed