Add .clang-format file to include/gpu src/gpu

Change-Id: Ie686f043f4b3a0a2bbd7ab38cf6bab53bb825a79
Reviewed-on: https://skia-review.googlesource.com/5651
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed