Allow gradient optimization with perspective

src/gpu/gl/GrGLProgramEffects.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLProgramEffects_DEFINED
 #define GrGLProgramEffects_DEFINED
 
@@ skipping 36 matching lines @@
      */
     void setData(GrGpuGL*,
                  const GrGLUniformManager&,
                  const GrEffectStage* effectStages[]);
 
     /**
      * Passed to GrGLEffects so they can add transformed coordinates to their shader code.
      */
     class TransformedCoords {
     public:
-        TransformedCoords(const char* name, GrSLType type, const char* vsName)
-            : fName(name), fType(type), fVSName(vsName) {
+        TransformedCoords(const char* name, GrSLType type)
+            : fName(name), fType(type) {
         }
 
         const char* c_str() const { return fName.c_str(); }
         GrSLType type() const { return fType; }
         const SkString& getName() const { return fName; }
-        // TODO: Remove the VS name when we have vertexless shaders, and gradients are reworked.
-        const SkString& getVSName() const { return fVSName; }
 
     private:
         SkString fName;
         GrSLType fType;
-        SkString fVSName;
     };
 
     typedef SkTArray<TransformedCoords> TransformedCoordsArray;
 
     /**
      * Passed to GrGLEffects so they can add texture reads to their shader code.
      */
     class TextureSampler {
     public:
         TextureSampler(UniformHandle uniform, const GrTextureAccess& access)
@@ skipping 102 matching lines @@
      * is in turn passed to the effect's emitCode() function.
      */
     void emitSamplers(const GrEffectRef&,
                       GrGLProgramEffects::TextureSamplerArray*);
 
     GrGLShaderBuilder*                fBuilder;
     SkAutoTDelete<GrGLProgramEffects> fProgramEffects;
 };
 
 #endif