Tests trace events for layout.
Recording started
Tracing complete
UpdateLayoutTree frames match: true
UpdateLayoutTree elementCount > 0: true
InvalidateLayout frames match: true
Layout frames match: true
dirtyObjects > 0: true
totalObjects > 0: true
has layoutRoots: true
layoutRoots is not empty: true
layoutRoots[0] has nodeId: true
layoutRoots[0] has depth: true
layoutRoots[0] has quads: true
layoutRoots[0].quads is not empty: true
SUCCESS: found all expected events.