This allows us to remove certain interfaces at compile time.
This replaces most (all?) of the cases where it was
if (gl) else [implicit gles] to be explicitly
if (gl) else if (gles)
in preparation for adding a WebGL standard.
For consistency, I tried to check first for GL, then for
GLES, which involved re-arranging a few if blocks.
PS 3 removes about 1.2KB (0.4 KB gzipped) from CanvasKit by
removing the GrGLInterface related checks from
GrGlInterface::validate()
PS 8 removes a total of 6.0 KB (2.6 KB gzipped) from
GrGlInterface::validate() and GrGlCaps::*
Bug: skia:8378
Change-Id: Ia91b732d888907f5d94b0eac8ca023084999fa7e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201604
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
8aa203c1d8