Prior to this the Android embedder code would extract the icudtl.dat asset out
of the APK and write it to local disk during the first startup of the app.
This change will make that work unnecessary and eliminate the risk of ICU
failures due to errors in the extraction process.
This is a no-op change, except for fixing a bug where download task
reference wasn't cleared after download was completed.
This change also removes call to output stream flush(), which is not
necessary according to Java spec.
The rest of the change deals with requiring the code to work directly
with ResourceUpdater object instead of having FlutterMain be a facade
that forwards some of ResourceUpdater's methods. This simplifies the
other (more essential) upcoming changes that will be landing in the
followings few PRs.
This change introduces manifest properties that control when dynamic patches are downloaded and installed in the application lifecycle.
Application developer can choose whether between install on restart, install on resume, or immediate forced install of dynamic patches.
Minor refactoring of dynamic patching code.
- Changes naming of manifest properties to be consistent with documentation.
- Moves methods from inner class to outer class to make them more reusable.
- Switch core snapshot to Dart 2 and remove support for loading platform.dill.
- Remove support for loading script snapshots.
- Remove support for loading source.
- Remove settings and fix names to reflect the above.
- Remove support for loading the service isolate from source.