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0832dfde5a
This adds more trace events to more layer operations and enhances the trace counters for the Fuchsia vulkan surface pool to include retained surface counts, emit stats on recycle events that might change the surface count, and by separating counters which measure bytes from counters which measure counts to make analysis simpler.
Flow
Flow is a simple compositor based on Skia that the Flutter engine uses to cache recoded paint commands and pixels generated from those recordings. Flow runs on the GPU thread and uploads information to the GPU.