In order for captures to replay correctly, track the original
width and height of the draw surface, as provided by eglMakeCurrent.

Bug: b/159238311
Test: angle_perftests
Change-Id: Ic8697abaca7dbdb94dabf34b872f69faf17b0b4d
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2250861
Commit-Queue: Cody Northrop <cnorthrop@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Manh Nguyen <nguyenmh@google.com>