Re-attach renderer for progress/meter when author shadow is allowed.

If the author shadow dom is added to progress/meter after the UA shadow dom
renderers have been created, the UA shadow dom renderers will stick. Fixed
by doing a lazyReattachIfAttached for the progress/meter host which were
already done for input elements, for instance.

Fixes flaky tests for progress/meter.

R=tkent@chromium.org
BUG=432129

Review URL: https://codereview.chromium.org/880573007

git-svn-id: svn://svn.chromium.org/blink/trunk@189764 bbb929c8-8fbe-4397-9dbb-9b2b20218538
10 files changed
tree: 8b07c2400ce75000e062bfbd5e4e4af964758e90
  1. third_party/