This involves cases of blitting to/from a rotated default framebuffer,
potentially with scaling in one or both dimensions.  Various
adjustments are needed at different times in the stack, including in
the custom BlitResolve fragment shaders.  Various tests are affected,
including the following:

Test: angle_end2end_tests --gtest_filter=*EGLPreRotationLargeSurfaceTest.OrientedWindowWithBlitFramebuffer
Test: angle_deqp_gles3_tests --gtest_filter=dEQP.GLES3/functional_fbo_invalidate_\*
Bug: b/158337857
Change-Id: Ibb176e4215784e85c0f34e6e1c22ba662517fed2
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2242359Reviewed-by: Ian Elliott <ianelliott@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Ian Elliott <ianelliott@google.com>