This perf test focuses on the hotspot we have in Framebuffer::
checkStatus. It's exactly the same as the standard draw call
benchmark, but binds a Framebuffer before rendering.

BUG=angleproject:1388

Change-Id: Icc7a99e399f469d765bf1ac6abe0562977b9a39d
Reviewed-on: https://chromium-review.googlesource.com/348956Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>