Add more tests to LeakExpectations.

NOTRY=true
BUG=364390, 364395, 366029, 366029, 366042, 366043

Review URL: https://codereview.chromium.org/246643013

git-svn-id: svn://svn.chromium.org/blink/trunk@172351 bbb929c8-8fbe-4397-9dbb-9b2b20218538