129304e09b
This change adds --source option to kernel compilers (front-end server and gen_kernel). This option instructs compiler to include extra source files into compilation even if they are not referenced from main library. TEST=Added test cases to pkg/frontend_server/test/frontend_server_test.dart and pkg/vm/test/kernel_front_end_test.dart Fixes https://github.com/dart-lang/sdk/issues/48144 Change-Id: If3d71538751e9ccfa8c82a5685d810cf811e021c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/231334 Reviewed-by: Johnni Winther <johnniwinther@google.com> Reviewed-by: Jens Johansen <jensj@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>