Revert of Remove GP from drawstate, revision of invariant output for GP

src/gpu/effects/GrSingleTextureEffect.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrSingleTextureEffect_DEFINED
 #define GrSingleTextureEffect_DEFINED
 
@@ skipping 23 matching lines @@
                           const GrTextureParams&,
                           GrCoordSet = kLocal_GrCoordSet);
 
     /**
      * Can be used as a helper to implement subclass onComputeInvariantOutput(). It assumes that
      * the subclass output color will be a modulation of the input color with a value read from the
      * texture.
      */
     void updateInvariantOutputForModulation(GrInvariantOutput* inout) const {
         if (GrPixelConfigIsAlphaOnly(this->texture(0)->config())) {
-            inout->mulByUnknownSingleComponent();
+            inout->mulByUnknownAlpha();
         } else if (GrPixelConfigIsOpaque(this->texture(0)->config())) {
-            inout->mulByUnknownOpaqueFourComponents();
+            inout->mulByUnknownOpaqueColor();
         } else {
-            inout->mulByUnknownFourComponents();
+            inout->mulByUnknownColor();
         }
     }
 
 private:
     GrCoordTransform fCoordTransform;
     GrTextureAccess  fTextureAccess;
 
     typedef GrFragmentProcessor INHERITED;
 };
 
 #endif