52177 Roll engine 5aff31194809..619acd58ca55 (23 commits) (cla: yes, waiting for tree to go green)

52178 Roll engine 619acd58ca55..f5a5031e9487 (1 commits) (cla: yes, waiting for tree to go green)

52181 Fix 2 typos within comments (cla: yes)

52187 Roll engine f5a5031e9487..162199452e55 (2 commits) (cla: yes, waiting for tree to go green)

52190 Roll engine 162199452e55..76e119268ed6 (1 commits) (cla: yes, waiting for tree to go green)