This patch merges these functions into dart:ui, which is simpler.

Fixes #83

Update Dart

Add an off-by-default flag for background compilation

iOS: Add a native service asset copy phase to move the service dylibs resolved by the tooling into the appropriate locations in the application bundle

iOS: Add a native service asset copy phase to move the service dylibs resolved by the tooling into the appropriate locations in the application bundle

Use Engine::RunFromBundle and the ZipAssetBundle on all platforms

We don't appear to need this DEPS entry to build.

Polish Mojo platform implementation

iOS: Vsync provider can take multiple callbacks

Move user editable files out of the generated Xcode directory

Allow multiple callbacks in the VSyncProvider

It's possible for multiple calls to AwaitVSync to be pending while reloading
an application.  The Animator may get an AwaitVSync, a Reset, and then another
AwaitVSync before the first vsync completes.

If this happens, invoke both callbacks.  If we close the pipe, then the
Animator will no longer make progress.

Add error logging when a dynamic service fails to load

* Use Node::Combinator::PRUNE, which stops the Mozart launcher from showing red
  when we're loading child views. Instead of blocking the whole app, we'll now
  just prune away the children that aren't ready. Eventually we'll want
  to let authors control these operations.

* Grab the service registry in AcceptConnection rather than CreateView. The
  CreateView comes from the Mozart launcher, which isn't where we want to get
  the service registry. Now we get the service registry from the first app to
  connect, which isn't right either but at least works while we sort out what
  we really want.

Document recent changes to import conventions.

This happens once per service

Rev engine

Fix the VM service path so the precompilation snapshotter can find observatory specific entry points

Fix the VM service path so the precompilation snapshotter can find observatory specific entry points

Fix the copying of service isolate sources into sdk_ext

Enable and test sky_shell --start-paused

Rev engine

Revert "Use tonic's message handler that supports pause on start and …

This reverts commit c0a61a03.

Enable threadsafe static initialization (aka 'magic statics')

Use tonic's message handler that supports pause on start and exit