Rename GrTextureAccess to GrProcessor::TextureSampler.

Renames vars and methods that used the work "access" to refer to this type.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4931

Change-Id: Ibcf488fbd445c5119fc13d190544cd98981bdbee
Reviewed-on: https://skia-review.googlesource.com/4931
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/include/gpu/GrFragmentProcessor.h b/include/gpu/GrFragmentProcessor.h
index 28b9e0b..30e92f6 100644
--- a/include/gpu/GrFragmentProcessor.h
+++ b/include/gpu/GrFragmentProcessor.h
@@ -183,10 +183,10 @@
                                           &GrFragmentProcessor::numCoordTransforms,
                                           &GrFragmentProcessor::coordTransform>;
 
-    using TextureAccessIter = FPItemIter<GrTextureAccess,
+    using TextureAccessIter = FPItemIter<TextureSampler,
                                          GrProcessor,
-                                         &GrProcessor::numTextures,
-                                         &GrProcessor::textureAccess>;
+                                         &GrProcessor::numTextureSamplers,
+                                         &GrProcessor::textureSampler>;
 
 protected:
     /**