tree 6a120c5021633fbf3bb3202c440001f91d4f1a41
parent f0e7a474fe9a7dff9be77da327b41c032708a071
author Zachary Anderson <zra@google.com> 1450121610 -0800
committer Zachary Anderson <zra@google.com> 1450121610 -0800

Roll Dart forward.

- Embedder provides the timer function.
- Performance boost (10 - 20%) in IPC RTT benchmark from using new
  isolate messaging natives in the handle watcher.

R=johnmccutchan@google.com

Review URL: https://codereview.chromium.org/1519213004 .