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Low latency 2d canvas should use swap chains on Windows when supported,
but this broke a few weeks ago during the canvas shared image
refactoring.

This CL fixes that, and adds a trace integration test to verify that
swap chains are indeed being presented in the GPU service.

Bug: 1009860
Change-Id: Ifeb8a9cc68bbca8d6b379c71a7707adb62921bf1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1836791Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703461}