Dart has the tendency to call `exit()` on arbitrary threads. This causes
the assertion to trip. Since this should only happen when Dart is
running the shell in non-interactive mode, we leak the message loop
without proper shutdown.

We should never hit this path on iOS.

This patch cleans up the public Java interface to the Flutter engine. The code
that we intend to be re-usable is now in the io.flutter.view package. The two
public classes are:

 * FlutterMain, which controls initialization of the system, and
 * FlutterView, which is an Android view that hosts a Flutter app.

We'll need to interate on these interface over time, but at least these names
are more reasonable.

Do not show an assertion failure if Dart_FinalizeLoading returns an error while building a snapshot (#2584)

This might happen due to errors expected during development (e.g. a mistyped

Dart class name)

Dont destroy the platform message loop on the Mac because the message pump is still not collected when the embedder state goes away.

Required by the Dart dependency.

Add an HTTP server for exporting Flutter debug info and a request han…

Fixes #3095

Fix uri canonicalization in DartLibraryProviderFiles

Update jni.dart

Currently there's no good way of synchronizing layout changes with children in

Mozart. Previously we flickered when we were out of sync with our child. Now we

jank instead because that's a more acceptable artifact while we work on

improving Mozart.



Fixes https://github.com/flutter/flutter/issues/3024

Update thread names in the Dart timeline.

Particularly, add support for blur filters to implement backdrop blur effects.

Allow third-party services to listen to openURL on iOS (needed for Google Sign-In)

Use a source_set instead of a static_lib for iOS service dylibs (fixes symbol visibility issue)

Update Dart revision to pull in changes related to tracing and add more trace types to TracingController

Update Dart revision to pull in changes related to tracing and add more trace types to TracingController

Update Mojo

Don't crash if the scene has no root layer set.

The layout protocol in Mozart changed. Now we need to pipe a scene version
through the system to the compositor.

Add font styles to ParagraphStyle

Add static assert to check that all Dart wrappable instances are thread-safe reference-countable.

Also, rename TextStyle#lineHeight to height.

Set the CSS overflow-wrap property to enable line breaks within a word

Fixes https://github.com/flutter/flutter/issues/162

Fix Mac build