Allow gradient optimization with perspective

src/gpu/gl/GrGLProgramEffects.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLProgramEffects.h"
 #include "GrDrawEffect.h"
 #include "gl/GrGLEffect.h"
@@ skipping 373 matching lines @@
                                                  vsVaryingName, uniName, coords.c_str());
                 } else {
                     vertexBuilder->vsCodeAppendf("\t%s = %s * vec3(%s, 1);\n",
                                                  vsVaryingName, uniName, coords.c_str());
                 }
                 break;
             }
             default:
                 GrCrash("Unexpected uniform type.");
         }
-        SkNEW_APPEND_TO_TARRAY(outCoords, TransformedCoords,
-                               (fsVaryingName, varyingType, vsVaryingName));
+        SkNEW_APPEND_TO_TARRAY(outCoords, TransformedCoords, (fsVaryingName, varyingType));
     }
 }
 
 void GrGLProgramEffectsBuilder::emitSamplers(const GrEffectRef& effect,
                                              TextureSamplerArray* outSamplers) {
     typedef GrGLProgramEffects::Sampler Sampler;
     SkTArray<Sampler, true>& samplers = fProgramEffects->fSamplers.push_back();
     int numTextures = effect->numTextures();
     samplers.push_back_n(numTextures);
     SkString name;
     for (int t = 0; t < numTextures; ++t) {
         name.printf("Sampler%d", t);
         samplers[t].fUniform = fBuilder->addUniform(GrGLShaderBuilder::kFragment_Visibility,
                                                     kSampler2D_GrSLType,
                                                     name.c_str());
         SkNEW_APPEND_TO_TARRAY(outSamplers, TextureSampler,
                                (samplers[t].fUniform, effect->textureAccess(t)));
     }
 }