tree 51be9c780fa601138c88c95c3dfb8f0cea580802
parent 91d43e5e01c1ac90b9321687aa77d1846139ea8b
author Nathan Rogers <nathanrogers@google.com> 1547592379 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1548728431 +0000

[flutter] Update type of presentation info to std::optional

Change |VsyncRecorder|'s |last_presentation_info_| to a std::optional,
rather than a value and a bool.  This is how I wanted to write it in the
first place, however we did not have C++17 support at the time.

Test: CQ
Change-Id: Ic6b2c6608455dc9f097bba6d892753cd02757c63