Luckily, the two cases which were reported could both be remedied by
making more things private.
* `DartFileEditBuilderImpl.librariesToImport` exposed `_LibraryImport`,
but could be made private anyhow. Also, it's package-private code,
so this is not a breaking change.
* `CodegenVisitor.generateConstant` accepted a private type as an
argument, but the whole class can be made private.
Change-Id: I8613812385ed0e9a7e36922d86889dad4cedf3cd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/428924
Commit-Queue: Samuel Rawlins <srawlins@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Sam Rawlins
08c541aa9c