Add WPT tests for canvas TextMetrics.

Currently WPT tests only covers width for canvas TextMetrics. This change
adds basic tests for all the other metrics:
-advances
-actualBoundingBoxLeft, actualBoundingBoxRight, actualBoundingBoxAscent,
 actualBoundingBoxDescent
-emHeightAscent, emHeightDescent
-fontBoundingBoxAscent, fontBoundingBoxDescent
-getBaselines()

Bug: 277215,853376
Change-Id: Ieba242e583bc98e747f35b1dc799bea7b55e3c24
Reviewed-on: https://chromium-review.googlesource.com/1185784
Commit-Queue: David Quiroz Marin <davidqu@chromium.org>
Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585961}

[BackgroundFetch] Part 2: Implement BackgroundFetchFailureReason.

This is the second part, the plumbing on the blink side.

Bug: 876691, 869918
Change-Id: I62fe4aaf37f41b5ebd341ce4731f7fda1d486feb
Reviewed-on: https://chromium-review.googlesource.com/1185015
Commit-Queue: Mugdha Lakhani <nator@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585906}

WPT: service worker: Refactor and format navigation-redirect.https.html.

In preparation for extending or modifying the test to test Client.url
and resultingClientId for whatwg/html#3891.

Bug: 876223
Change-Id: I50e8b8c21c5f8639a24a9c2ec00df3ccafdc8ac8
Reviewed-on: https://chromium-review.googlesource.com/1184656
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585738}

add romandev (web-platform-tests#12582)

HTML: fieldset legend should inherit alignment

See whatwg/html#3913.

Add RTCQuicTransport IDL + binding skeleton

Bug: 868068
Change-Id: I55bed5a6a35bec88b76066eb477914eb571104c7
Reviewed-on: https://chromium-review.googlesource.com/1167902
Commit-Queue: Steve Anton <steveanton@chromium.org>
Reviewed-by: Philip Jägenstedt <foolip@chromium.org>
Reviewed-by: Harald Alvestrand <hta@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585997}

Merge pull request web-platform-tests#5302 from gsnedders/built-selec…

…tors

Get the CSS 3 Selectors testsuite included

Correctly spell XREnvironmentIntegrationProvider

Change spelling of XREnviromentIntegrationProvider to
XREnvironmentIntegrationProvider. Because apparently it's spelled
environ not enviro.

Cq-Include-Trybots: luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I001157b168e325aeab03ec9e1bb22532b8c25b45
Reviewed-on: https://chromium-review.googlesource.com/1186963
Reviewed-by: Michael Thiessen <mthiesse@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Anna Offenwanger <offenwanger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585532}

DOM: do initEvent() before a returnValue test

HTML: add test for history.state after document.open() (web-platform-…

…tests#12650)

For whatwg/html#3946.