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This is needed for importing the UV plane of a P010/P016 texture into
GL/ANGLE.

Bug: 1116101
Change-Id: I32a008ddc0350858372d764de14998c930d48683
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2626100
Auto-Submit: Sunny Sachanandani <sunnyps@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Reviewed-by: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843532}