11736 Add wasm to sky_engine (cla: yes)

11776 [flutter_runner] Port over all the changes to the dart_runner cmx files (cla: yes)

11783 completely strip bitcode (cla: yes)

11784 Roll fuchsia/sdk/core/linux-amd64 from -UaaS… to fSXZ0… (cla: yes)

11790 Roll fuchsia/clang/linux-amd64 from wGyr4… to -mnHl… (cla: yes)

11792 Started logging warnings if we drop platform messages. (cla: yes)

11795 Add a good reference source for font metrics. (cla: yes)

11796 Provide a hook for a plugin handler to receive messages on the web (cla: yes)