53cae0aed9
- Add three new embedder hooks registered with Dart_SetEmbedderTimelineCallbacks - Dart_EmbedderTimelineStartRecording - Dart_EmbedderTimelineStopRecording - Dart_EmbedderTimelineGetTimeline - Add unit test for record start / stop notification. - Add unit test for get timeline. This should allow Flutter to remove their hacked up timeline service RPCs. R=chinmaygarde@google.com, rmacnak@google.com Review URL: https://codereview.chromium.org/1783953002 .