Stop aggregating texture/buffer access objects in GrFragmentProcessor parents.

src/gpu/GrPipeline.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrPipeline.h"
 
 #include "GrCaps.h"
@@ skipping 158 matching lines @@
                                                             &blendedColor);
     }
     if (blendedColor.fWillBlendWithDst) {
         overrides->fFlags |= GrXPOverridesForBatch::kWillColorBlendWithDst_Flag;
     }
 
     return pipeline;
 }
 
 static void add_dependencies_for_processor(const GrFragmentProcessor* proc, GrRenderTarget* rt) {
-    for (int i = 0; i < proc->numChildProcessors(); ++i) {
-        // need to recurse
-        add_dependencies_for_processor(&proc->childProcessor(i), rt);
-    }
-
-    for (int i = 0; i < proc->numTextures(); ++i) {
-        GrTexture* texture = proc->textureAccess(i).getTexture();
+    GrFragmentProcessor::TextureAccessIter iter(proc);
+    while (const GrTextureAccess* access = iter.next()) {
         SkASSERT(rt->getLastDrawTarget());
-        rt->getLastDrawTarget()->addDependency(texture);
+        rt->getLastDrawTarget()->addDependency(access->getTexture());
     }
 }
 
 void GrPipeline::addDependenciesTo(GrRenderTarget* rt) const {
     for (int i = 0; i < fFragmentProcessors.count(); ++i) {
         add_dependencies_for_processor(fFragmentProcessors[i].get(), rt);
     }
 
     const GrXferProcessor& xfer = this->getXferProcessor();
 
@@ skipping 46 matching lines @@
         }
     }
 
     for (int i = 0; i < a.numFragmentProcessors(); i++) {
         if (!a.getFragmentProcessor(i).isEqual(b.getFragmentProcessor(i))) {
             return false;
         }
     }
     return true;
 }