f76b6a8cc1
Adjust TimelineEvent::PrintJSON to use JSONWriter for compatibility with PRODUCT mode. TEST=ci Change-Id: I694889c655719371364012b4324b7947d7b2d5e5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/240911 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>