Oilpan: Remove ThreadState::statsAfterLastGC().

It is not used.

BUG=420515

Review URL: https://codereview.chromium.org/672123002

git-svn-id: svn://svn.chromium.org/blink/trunk@184235 bbb929c8-8fbe-4397-9dbb-9b2b20218538
bindings: removed unused includes from WorkerScriptController.cpp

BUG=358074

Review URL: https://codereview.chromium.org/662063004

git-svn-id: svn://svn.chromium.org/blink/trunk@184236 bbb929c8-8fbe-4397-9dbb-9b2b20218538