Yilong Li eaaa732b80 fuchsia: Allow access to system services in tests. (flutter/engine#25303)
Per https://fuchsia.dev/fuchsia-src/concepts/testing/v1_test_component,
in order to access non-basic system services like Vulkan loader and
sysmem allocator, we need to add "system-services" field to the cmx
metadata file.

Unittests like "shell_test" requires Vulkan to run properly, so we
add Vulkan loader and sysmem services; for Flutter runner tests,
we also need to add fuchsia.ui.scenic.Scenic since the test needs
to create a Scenic session as well.

TEST=shell_tests (SkpWarmupTest.Basic/SkpWarmupTest.Image)
     flutter_runner_tests (EngineTest.SkpWarmUp) on FEMU
2021-03-31 13:43:33 -07:00
Languages
Dart 75%
C++ 16.5%
Objective-C++ 2.9%
Java 2.8%
Objective-C 0.7%
Other 1.9%