Similar to how dart2js keeps its own target in package compiler.
This allows VmTarget to use package vm specific transformations and metadata.
Change-Id: I41dd2ae241b828224fb2c9a51e6ad5073b6fdea8
Reviewed-on: https://dart-review.googlesource.com/69160
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Vyacheslav Egorov
bde6bbca96