Oilpan: fix build after r202130.

The Blink GC plugin is syntactic, requiring GCed fields to literally
appear within the trace() method body. Once that don't are assumed not
to have been traced. Which prevents the use of an accessor, like r202130
introduced.

TBR=oilpan-reviews,yosin
BUG=513568
NOTRY=true

Review URL: https://codereview.chromium.org/1337933002

git-svn-id: svn://svn.chromium.org/blink/trunk@202137 bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed
tree: 4315fa91304d8a10ace650f359e3ad87d10d8a19
  1. third_party/