Add OpenGL and OpenGLES platform types for the ANGLE tests.

Comment out some UNIMPLEMENTEDs that tests using OpenGL trigger.

BUG=angle:882

Change-Id: I7f85eed184f7cebd25e2521d793fc9c394b704ce
Reviewed-on: https://chromium-review.googlesource.com/252252Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>