This also involves initializing the swap chain and queue.

BUG=angleproject:1319

Change-Id: Ia3a2141905f17b2cdddddab07336f33a737d4fc1
Reviewed-on: https://chromium-review.googlesource.com/367752Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>