Add GrProcOptInfo class to track various output information for color and coverage stages.

src/gpu/GrProcessor.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrProcessor.h"
 #include "GrBackendProcessorFactory.h"
 #include "GrContext.h"
@@ skipping 112 matching lines @@
     }
     for (int i = 0; i < this->numTextures(); ++i) {
         if (this->textureAccess(i) != that.textureAccess(i)) {
             return false;
         }
     }
     return true;
 }
 
 void GrProcessor::computeInvariantOutput(GrInvariantOutput* inout) const {
-    inout->resetWillUseInputColor();
     this->onComputeInvariantOutput(inout);
-#ifdef SK_DEBUG
-    inout->validate();
-#endif
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 void GrFragmentProcessor::addCoordTransform(const GrCoordTransform* transform) {
     fCoordTransforms.push_back(transform);
     SkDEBUGCODE(transform->setInProcessor();)
 }
 
 bool GrFragmentProcessor::hasSameTransforms(const GrFragmentProcessor& that) const {
     if (fCoordTransforms.count() != that.fCoordTransforms.count()) {
         return false;
     }
     int count = fCoordTransforms.count();
     for (int i = 0; i < count; ++i) {
         if (*fCoordTransforms[i] != *that.fCoordTransforms[i]) {
             return false;
         }
     }
     return true;
 }