Make 2D canvases in low latency mode use GPU

This change removes code that indicated a preference for software
rendering when a 2D canvas was in low latency mode

BUG=789232

Change-Id: If2c22cb68db63b9dcc9a7170960fc6414703fe40
Reviewed-on: https://chromium-review.googlesource.com/1150577
Reviewed-by: Miguel Casas <mcasas@chromium.org>
Commit-Queue: Justin Novosad <junov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578049}
1 file changed