* Use depfile in --preview-dart-2 mode.
* Generate and use frontend_server.d to guard against reusing outdated dill files when frontend_server changes.
* Run flutter tests in preview-dart-2 mode on travis flutter builds.
* Run dart2 tests on osx. Run dart tests in dart2.
* Fix name camelCase
* Default options to empty array, rather than null
* Troubleshoot failures
* More logging
* Troubleshoot: run single test
* Troubleshoot: run 15 tests
* Troubleshoot: run 15 tests with fix
* Try limit concurrency to 1
* Limit concurrency for preview-dart-2 tests to 4
* Move dart2 tests to allow_failures section
* Reinstate tests_dart_2 shard
* Raise concurrency to 8
* Reuse compiler across multiple test runs
* Allow to switch entry points when recompiling.
Actually use single compiler to incrementally recompile all tests executed by 'flutter test'.
* Remove leftover commented code
* Fix comment
* Lints
* Use already downloaded dart sdk for frontend_server.
This is follow-up to https://github.com/flutter/flutter/pull/14610
* Remove reference to engine dart-sdk from artifacts
* Remove unused imports
* WIP to switch back to solution where dart sdk is downloaded into bin/cache/dart-sdk, but it is 'flutter precache -a' that can download all dart sdks for other platforms under bin/cache/artifacts/engine/<platform>/dart-sdk
* Download all dart sdks when 'flutter precache -a'
* Reland 9534082fc0 with fix for incremental compilation.
When in incremental mode, awaiting exitCode won't work because compiler is not expected to exit after compilation.
Instead listen for stdout stream closing and report error if outputFilename has not been received.
* Fix lints
* Plumb a --strong option through to the front end server and the engine
so that we can run flutter apps in preview-dart-2 and strong mode
* - Address analyzer lint issues
*- correctly set up strong mode option in the case of AOT builds
* Fix restart flow for preview-dart-2 mode.
Restart in preview-dart-2 needs to use kernel file and it has to be complete, rather than incremental kernel file.
* Add curly braces
* Do full compile on restart
* Roll engine to pick up changes to hot reload for preview-dart-2
This CL introduces 2 hidden options to 'flutter build aot' and 'flutter run' for passing arbitrary arguments to front-end server and to gen_snapshot tool when building and running flutter app in --profile or --release modes.
The ability to pass arbitrary options simplifies various experiments, as it removes the need to change defaults and rebuild flutter engine for every tested configuration.
