Rename GrTextureParams to GrSamplerParams

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4965

Change-Id: I7d52e81c670e92ca96117284f44b274ce3cc3671
Reviewed-on: https://skia-review.googlesource.com/4965
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
79 files changed