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/src/effects/SkTableColorFilter.cpp b/src/effects/SkTableColorFilter.cpp
index cd786df..90a7856 100644
--- a/src/effects/SkTableColorFilter.cpp
+++ b/src/effects/SkTableColorFilter.cpp
@@ -365,7 +365,7 @@
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
-    GrTextureAccess         fTextureAccess;
+    TextureSampler          fTextureSampler;
 
     // currently not used in shader code, just to assist onComputeInvariantOutput().
     unsigned                fFlags;
@@ -485,12 +485,12 @@
 
 ColorTableEffect::ColorTableEffect(GrTexture* texture, GrTextureStripAtlas* atlas, int row,
                                    unsigned flags)
-    : fTextureAccess(texture)
+    : fTextureSampler(texture)
     , fFlags(flags)
     , fAtlas(atlas)
     , fRow(row) {
     this->initClassID<ColorTableEffect>();
-    this->addTextureAccess(&fTextureAccess);
+    this->addTextureSampler(&fTextureSampler);
 }
 
 ColorTableEffect::~ColorTableEffect() {