26238 fix mobile a11y placeholder (cla: yes, waiting for tree to go green, platform-web)

26242 Roll Fuchsia Mac SDK from F5TX4MaEg… to mx5LVKqk8… (cla: yes, waiting for tree to go green)

26243 Roll Fuchsia Linux SDK from boele8geO… to 5qwj-Mw7_… (cla: yes, waiting for tree to go green)

26245 Roll Skia from fb8d20befa8f to d9ea2989d6e9 (20 revisions) (cla: yes, waiting for tree to go green)

26246 Roll Skia from d9ea2989d6e9 to d7d7a8215e6c (1 revision) (cla: yes, waiting for tree to go green)