21396 Support dragging native platform views (cla: yes, platform-android)

21397 Remove ASCII art from mDNS error log (cla: yes, platform-ios)

21398 Roll Fuchsia Mac SDK from v7dguVBSA… to xnB_uJM8T… (cla: yes, waiting for tree to go green)

21399 Roll Skia from 03c31eca19ce to 5227335b0add (2 revisions) (cla: yes, waiting for tree to go green)

21402 Roll Skia from 5227335b0add to 1748c6a3b8c8 (1 revision) (cla: yes, waiting for tree to go green)