Sync web-platform-tests PR 14537 into mozilla-central (this bug is closed when the sync is complete). PR: https://github.com/web-platform-tests/wpt/pull/14537 Details from upstream follow. Robert Ma <robertma@chromium.org> wrote: > Cache manifest everywhere > > Move the cache layer of manifest objects from wpt.testfiles to > manifest.manifest so that all users of the manifest module can benefit. > > This prevents us from having two in-memory copies of the manifest when > running affected tests (one loaded by wpt.testfiles and the other loaded > by wptrunner.testloader). Partly fixes #14421 (the memory usage part of > it, but not the code health part).

Pushed to try https://treeherder.mozilla.org/#/jobs?repo=try&revision=efbd23b12f3b1362e8d813b738ce337fceef7020

The PR was not expected to affect any tests, but the try push wasn't a success. Check the try results for infrastructure issues

Pushed to try https://treeherder.mozilla.org/#/jobs?repo=try&revision=8402397970ddb4f5591c15a294934572609bbc18

Pushed to try https://treeherder.mozilla.org/#/jobs?repo=try&revision=1219c9f38d2e0be3224b7c61f530f25c46865f28

Pushed to try https://treeherder.mozilla.org/#/jobs?repo=try&revision=6c93f0f619060d97e37aaa352e4e720c3c226fb1

Pushed by james@hoppipolla.co.uk: https://hg.mozilla.org/integration/mozilla-inbound/rev/503b2f870984 [wpt PR 14537] - Cache manifest everywhere, a=testonly

Pushed by james@hoppipolla.co.uk: https://hg.mozilla.org/integration/mozilla-inbound/rev/c61e1ff60a77 [wpt PR 14537] - Cache manifest everywhere, a=testonly