8a46559653
When running on Fuchsia, "fml/trace_event.h" sends trace events towards Fuchsia's tracing system, rather than its own |fml::tracing::*| one. Do the same thing for |FlutterEventTracer|, in order to unlock category "skia" trace events when running on Fuchsia. The reason this was not working before is because |FlutterEventTracer| was directly using |fml::tracing::*| functions, rather than the TRACE_EVENT_* macros. In the future, we can look into having the skia event tracer enabled by default on Fuchsia, controlling the presence of Skia events by enabling/disabling the "skia" category, once we measure the performance cost of doing so.
Flutter Engine
Flutter is a new way to build high-performance, cross-platform mobile apps. Flutter is optimized for today's, and tomorrow's, mobile devices. We are focused on low-latency input and high frame rates on Android and iOS.
The Flutter Engine is a portable runtime for hosting Flutter applications. It implements Flutter's core libraries, including animation and graphics, file and network I/O, accessibility support, plugin architecture, and a Dart runtime and compile toolchain. Most developers will interact with Flutter via the Flutter Framework, which provides a modern, reactive framework, and a rich set of platform, layout and foundation widgets.
If you are new to Flutter, then you will find more general information on the Flutter project, including tutorials and samples, on our Web site at flutter.io. For specific information about Flutter's APIs, consider our API reference which can be found at the docs.flutter.io.
If you intend to contribute to Flutter, welcome! You are encouraged to start with our contributor guide, which helps onboard new team members.