Track per-window information in ViewFrameInfo
FrameInfo will now be per-window; that is, per-ViewRootImpl. Some of the information should remain “global” (it remain in Choreographer), while some information is going to become ViewRootImpl-specific. Before the information gets passed to the native layer, the ViewRootImpl-specific info will be stitched together with the general Choreographer info. This change is useful in order to correctly correlate frames with a specific input event. In the unlikely scenario of a user touching two windows of the same app simultaneously, this change will allow us to correctly measure the latency of both frames produced by the windows. Design doc: https://docs.google.com/document/d/1KMpMBlOxnl7zkWBCbXZZE6ZlaHEA4efYnN6WYK8n3FE/edit?resourcekey=0-eqooVNP0SskupljlTFvtOQ Test: atest ViewFrameInfoTest Bug: 169866723 Change-Id: Ib0bf9cd51cbcc0b9b70460c929c480eb490ec322
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