29634 [fuchsia] Point TODOs off closed bug. (cla: yes, waiting for tree to go green, platform-fuchsia, needs tests)

29635 Roll Fuchsia Mac SDK from xVPuybnbm… to q9ukLNQmF… (cla: yes, waiting for tree to go green)

29636 Roll Skia from 32385b7070a2 to 7fbd45f1c1a3 (1 revision) (cla: yes, waiting for tree to go green)

29637 Roll Fuchsia Linux SDK from g1S-VTjK7… to wPLQY_mp4… (cla: yes, waiting for tree to go green)

29638 [Embedder] Send key data through message channel (platform-ios, cla: yes, platform-web, platform-fuchsia, embedder)