e9a44ba6a8
This changes EXTENSION_DECLARES_INSTANCE_FIELD to be a parser error and moves it into the parser so that it is generated for all of CFE. See https://github.com/dart-lang/sdk/issues/37945 Change-Id: Ib49d49a20d670e0dd7d9a4cd870237d2cf87dd00 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114882 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Dan Rubel <danrubel@google.com>