18677 Roll Skia from 7a34aff3e6a2 to 25a8404bd150 (1 revision) (cla: yes, waiting for tree to go green)

18700 Upgrade the meta package version for compatibility with petitparser-3.0.4 (cla: yes)

18703 do not lock petitparser (cla: yes)

18704 Roll Skia from 25a8404bd150 to 8c5786622b4e (17 revisions) (cla: yes, waiting for tree to go green)

18706 Make images contribute to Picture allocation size, more aggressively release references when dispose is called (cla: yes, waiting for tree to go green)