Change renderbuffer width/height/sample types to GLsizei This matches the types used by GL and stored in the state. setStorage and setStorageMultisampled calls were using size_t instead with a number of unnecessary casts in places which are now removed. Bug: angleproject:4836 Change-Id: Ibb570f0c088a6f29abe10f513de27c30ba4dd098 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2411697 Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>