Initial CL to move color / coverage off of drawstate

src/gpu/GrOptDrawState.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrOptDrawState_DEFINED
 #define GrOptDrawState_DEFINED
 
@@ skipping 12 matching lines @@
 /**
  * Class that holds an optimized version of a GrDrawState. It is meant to be an immutable class,
  * and contains all data needed to set the state for a gpu draw.
  */
 class GrOptDrawState {
 public:
     SK_DECLARE_INST_COUNT(GrOptDrawState)
 
     typedef GrClipMaskManager::ScissorState ScissorState;
 
-    GrOptDrawState(const GrDrawState& drawState, const GrDrawTargetCaps&, const ScissorState&,
-                   const GrDeviceCoordTexture* dstCopy, GrGpu::DrawType);
+    GrOptDrawState(const GrDrawState& drawState, GrColor, uint8_t coverage, const GrDrawTargetCaps&,
+                   const ScissorState&, const GrDeviceCoordTexture* dstCopy, GrGpu::DrawType);
 
     bool operator== (const GrOptDrawState& that) const;
     bool operator!= (const GrOptDrawState& that) const { return !(*this == that); }
 
     /// @}
 
     ///////////////////////////////////////////////////////////////////////////
     /// @name Color
     ////
 
@@ skipping 154 matching lines @@
                                         const GrProcOptInfo& colorPOI,
                                         const GrProcOptInfo& coveragePOI,
                                         int* firstColorStageIdx,
                                         int* firstCoverageStageIdx);
 
     /**
      * Calculates the primary and secondary output types of the shader. For certain output types
      * the function may adjust the blend coefficients. After this function is called the src and dst
      * blend coeffs will represent those used by backend API.
      */
-    void setOutputStateInfo(const GrDrawState& ds, GrXferProcessor::OptFlags,
+    void setOutputStateInfo(const GrDrawState& ds, GrColor coverage, GrXferProcessor::OptFlags,
                             const GrDrawTargetCaps&);
 
     enum Flags {
         kDither_Flag            = 0x1,
         kHWAA_Flag              = 0x2,
         kDisableColorWrite_Flag = 0x4,
     };
 
     typedef GrPendingIOResource<GrRenderTarget, kWrite_GrIOType> RenderTarget;
     typedef SkSTArray<8, GrPendingFragmentStage> FragmentStageArray;
@@ skipping 21 matching lines @@
 
     // This function is equivalent to the offset into fFragmentStages where coverage stages begin.
     int                                 fNumColorStages;
 
     GrProgramDesc fDesc;
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif