23868 Read loading unit mapping from AndroidManifest instead of strings (cla: yes, platform-android, waiting for tree to go green)

23872 Roll Skia from bfc9be0f773f to 3193ff271628 (5 revisions) (cla: yes, waiting for tree to go green)

23873 Roll Fuchsia Linux SDK from mODEe2CNk… to edqShE0QE… (cla: yes, waiting for tree to go green)

23874 Roll Dart SDK from 82b4c77fb17f to 748993c3997a (1 revision) (cla: yes, waiting for tree to go green)

23875 Roll Skia from 3193ff271628 to 2a4c0fbdca1a (3 revisions) (cla: yes, waiting for tree to go green)