This CL tries to fix the flakiness of the execution-order.sub.html test.
Important change:
- async_preload and async_blocking_render are renamed to
async_preload_or_blocking_render because there is no ordering
guarantee between these two.
- Before this CL, the contentful paint (FirstPaint) seemed to trigger
random timings, and made the test flaky. This CL inserts a <h1> block
early so that FirstPaint happens at constant timing.
Bug: 1345745, 1340837
Change-Id: I3f48caee7cf97262dfc18c572c0c71a34714a8ed
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3833682
Reviewed-by: Kouhei Ueno <kouhei@chromium.org>
Commit-Queue: Minoru Chikamune <chikamune@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1035921}
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