Remove array of TextureSampler pointers from GrIOResourceProcessor.

Instead store sampler count on base class and subclasses implement a
virtual to get the ith sampler.

Change-Id: I13e2447a6467a09761d8615acb4aa360b87b1476
Reviewed-on: https://skia-review.googlesource.com/141563
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/ccpr/GrCCClipProcessor.cpp b/src/gpu/ccpr/GrCCClipProcessor.cpp
index 91d6892..0c1f0e8 100644
--- a/src/gpu/ccpr/GrCCClipProcessor.cpp
+++ b/src/gpu/ccpr/GrCCClipProcessor.cpp
@@ -22,7 +22,7 @@
         , fOverrideFillType(overrideFillType)
         , fAtlasAccess(sk_ref_sp(fClipPath->atlasLazyProxy()), GrSamplerState::Filter::kNearest,
                        GrSamplerState::WrapMode::kClamp, kFragment_GrShaderFlag) {
-    this->addTextureSampler(&fAtlasAccess);
+    this->setTextureSamplerCnt(1);
 }
 
 std::unique_ptr<GrFragmentProcessor> GrCCClipProcessor::clone() const {