mus: Report when a Window ID of a SurfaceDrawQuad is not found.
mus: Report when a Window ID of a SurfaceDrawQuad is not found.

BUG=none

Review URL: https://codereview.chromium.org/1454963002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#360216}

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