Callum Moffat b097d24022 Add "Frame Request Pending" lag to collected metrics (#135279) ... This measures the wall clock time between a new frame being scheduled in dart code to the Vsync callback in the engine It's an important source of lag which isn't shown in the top-level UI / Build time graphs, and can correlate with "invisible" missed/non-scheduled frames I had to change a few unrelated timings in the test, it was only passing based on luck of sort order, and broke when I added more entries to the timeline. Part of #129150		2023-09-26 00:35:57 +00:00
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common	Remove 'must not be null' comments from various libraries. (#134984)	2023-09-20 15:44:49 +00:00
driver	Add "Frame Request Pending" lag to collected metrics (#135279)	2023-09-26 00:35:57 +00:00
extension	Remove 'must be non-null' and 'must not be null' comments from non-framework libraries (#134994)	2023-09-19 17:26:07 +00:00