[jumbo] Move two clashing RunPendingTasks() in blink tests

There is a ::blink::test::RunPendingTasks() but one test
imported it into ::blink with a using statement and another
test created its own ::blink::RunPendingTasks(). This cause
problems in some jumbo builds. This moves both RunPendingTasks
away from the blink namespace.

Change-Id: Ib811f27269305cc1ed2fa4019377e1a4b2e36d6e
Reviewed-on: https://chromium-review.googlesource.com/c/1386209
Reviewed-by: Fredrik Söderquist <fs@opera.com>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Commit-Position: refs/heads/master@{#618167}
2 files changed