Oilpan: TSan build fix after r193182
Oilpan: TSan build fix after r193182

Fix type used in __tsan_atomic64_store from long long to long.

TBR=tkent@chromium.org

Review URL: https://codereview.chromium.org/1062153002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@193271 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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