Remove unused 'virtual' in GLSLCodeGenerator.

These might have been used by the CPPCodeGenerator originally.
Nobody subclasses the GLSLCodeGenerator nowadays.

Change-Id: I0d0956e9d48f098b9cf91eb1ddfab6ec448ea10e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/737936
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed