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/gpu/effects/GrBicubicEffect.cpp b/src/gpu/effects/GrBicubicEffect.cpp
index 737625f..17a492f 100644
--- a/src/gpu/effects/GrBicubicEffect.cpp
+++ b/src/gpu/effects/GrBicubicEffect.cpp
@@ -126,13 +126,13 @@
 void GrGLBicubicEffect::onSetData(const GrGLSLProgramDataManager& pdman,
                                   const GrProcessor& processor) {
     const GrBicubicEffect& bicubicEffect = processor.cast<GrBicubicEffect>();
-    const GrTexture& texture = *processor.texture(0);
+    GrTexture* texture = processor.textureSampler(0).getTexture();
     float imageIncrement[2];
-    imageIncrement[0] = 1.0f / texture.width();
-    imageIncrement[1] = 1.0f / texture.height();
+    imageIncrement[0] = 1.0f / texture->width();
+    imageIncrement[1] = 1.0f / texture->height();
     pdman.set2fv(fImageIncrementUni, 1, imageIncrement);
     pdman.setMatrix4f(fCoefficientsUni, bicubicEffect.coefficients());
-    fDomain.setData(pdman, bicubicEffect.domain(), texture.origin());
+    fDomain.setData(pdman, bicubicEffect.domain(), texture->origin());
     if (SkToBool(bicubicEffect.colorSpaceXform())) {
         pdman.setSkMatrix44(fColorSpaceXformUni, bicubicEffect.colorSpaceXform()->srcToDst());
     }