17754 Roll fuchsia/sdk/core/linux-amd64 from Udupa… to Pgthi… (cla: yes, waiting for tree to go green)

17755 PlatformResolvedLocale localization message channel (cla: yes)

17756 Guard canvas virtuals so we can remove legacy didConcat44 (cla: yes)

17757 Roll fuchsia/sdk/core/mac-amd64 from urCsS… to W1XGO… (cla: yes, waiting for tree to go green)

17758 Roll src/third_party/skia 938b4532b48f..7a9c9d66f12c (2 commits) (cla: yes, waiting for tree to go green)