1ef4399df0
This uses optional new/const and `=` in named argument defaults. All changes are automated, except for: - utils/dartdevc/BUILD.gn: run DDC build scripts with --preview-dart-2 - pkg/dev_compiler/tool/patch_sdk.dart: add a TODO that Analyzer doesn't supporting implicit const in libraries.dart - pkg/dev_compiler/tool/input_sdk/libraries.dart: was not formatted due to the aforementioned Analyzer bug - tools/bots/test_matrix.json: run DDC sourcemap suite in Dart 2 mode - pkg/pkg.status: skip pkg/dev_compiler if running in Dart 1 mode Change-Id: I9b80ccba0c2cc7b66efc662a0b16562e3660aee3 Reviewed-on: https://dart-review.googlesource.com/60402 Commit-Queue: Jenny Messerly <jmesserly@google.com> Reviewed-by: Bob Nystrom <rnystrom@google.com>