Make GrDrawState and GrEffectStage use the pending io/exec ref mechanisms.

src/gpu/GrRODrawState.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrRODrawState.h"
 #include "GrDrawTargetCaps.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 
 bool GrRODrawState::isEqual(const GrRODrawState& that) const {
     bool usingVertexColors = this->hasColorVertexAttribute();
     if (!usingVertexColors && this->fColor != that.fColor) {
         return false;
     }
 
-    if (this->fRenderTarget.get() != that.fRenderTarget.get() ||
+    if (this->getRenderTarget() != that.getRenderTarget() ||
         this->fColorStages.count() != that.fColorStages.count() ||
         this->fCoverageStages.count() != that.fCoverageStages.count() ||
         !this->fViewMatrix.cheapEqualTo(that.fViewMatrix) ||
         this->fSrcBlend != that.fSrcBlend ||
         this->fDstBlend != that.fDstBlend ||
         this->fBlendConstant != that.fBlendConstant ||
         this->fFlagBits != that.fFlagBits ||
         this->fVACount != that.fVACount ||
         this->fVAStride != that.fVAStride ||
         memcmp(this->fVAPtr, that.fVAPtr, this->fVACount * sizeof(GrVertexAttrib)) ||
@@ skipping 128 matching lines @@
      find that only 1, ISA, and ISC produce the correct destination when applied to S' and D.
      Also, if we're directly rendering coverage (isCoverageDrawing) then coverage is treated as
      color by definition.
      */
     return kOne_GrBlendCoeff == fDstBlend ||
            kISA_GrBlendCoeff == fDstBlend ||
            kISC_GrBlendCoeff == fDstBlend ||
            this->isCoverageDrawing();
 }
 
+void GrRODrawState::convertToPendingExec() {
+    fRenderTarget.markPendingIO();
+    fRenderTarget.removeRef();
+    for (int i = 0; i < fColorStages.count(); ++i) {
+        fColorStages[i].convertToPendingExec();
+    }
+    for (int i = 0; i < fCoverageStages.count(); ++i) {
+        fCoverageStages[i].convertToPendingExec();
+    }
+}