It's not always clear which format should be passed to GetDXGIFormatInfo,
since a resource is associated with multiple formats. In some cases, one
of the formats is typeless and one of them is typed, which would return
different type information depending on which one is used. In some cases,
one of the formats may even be a depth format while another is not.
GetDXGIFormatSizeInfo will return correct data no matter which format
associated with a certain resource is passed to it.

Remaining uses of GetDXGIFormatInfo will need to be addressed separately,
either making sure that they always use the format that makes sense in a
given context, or plumbing in the required information in some other way.

BUG=angleproject:1244
TEST=angle_end2end_tests

Change-Id: If3cb03ab68d27743b1fdeb539234ec621dfa3c04
Reviewed-on: https://chromium-review.googlesource.com/328230Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>