Performance tests should use GCController.collectAll instead of GCController.collect

To make sure that (almost) all garbage is collected, it's better to use GCController.collectAll.

BUG=

Review URL: https://codereview.chromium.org/1359563002

git-svn-id: svn://svn.chromium.org/blink/trunk@202660 bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed