Opt state takes a GP instead of a GeometryStage

src/gpu/gl/GrGLProcessor.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 GrGLProcessor_DEFINED
 #define GrGLProcessor_DEFINED
 
@@ skipping 94 matching lines @@
         @param outputColor  A predefined vec4 in the FS in which the stage should place its output
                             color (or coverage).
         @param inputColor   A vec4 that holds the input color to the stage in the FS. This may be
                             NULL in which case the implied input is solid white (all ones).
                             TODO: Better system for communicating optimization info (e.g. input
                             color is solid white, trans black, known to be opaque, etc.) that allows
                             the effect to communicate back similar known info about its output.
         @param samplers     Contains one entry for each GrTextureAccess of the GrProcessor. These
                             can be passed to the builder to emit texture reads in the generated
                             code.
+        TODO this should take a struct
         */
     virtual void emitCode(GrGLProgramBuilder* builder,
                           const GrFragmentProcessor& effect,
                           const GrProcessorKey& key,
                           const char* outputColor,
                           const char* inputColor,
                           const TransformedCoordsArray& coords,
                           const TextureSamplerArray& samplers) = 0;
 
 private:
     typedef GrGLProcessor INHERITED;
 };
 
 #endif