Commits
John Reck authored 2614bd225f8
DO NOT MERGE Backport of limited jank-tracking metrics Bug: 19821830 Cherry-pick of ba6adf66d3c44c0aa2fd8a224862ff1901d64300 Cherry-pick of e70c5754d01f2ab0ff47ea3eabaa88aca5ed2a36 Change-Id: Id342fa0ab345f204bec58acf45ce72f6de950cfb