Remove GrCoordTransform::kPosition_CoordSet

src/gpu/gl/builders/GrGLVertexShaderBuilder.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLVertexShaderBuilder.h"
 #include "GrGLProgramBuilder.h"
 #include "GrGLShaderStringBuilder.h"
@@ skipping 36 matching lines @@
     fProgramBuilder->fUniformHandles.fRTAdjustmentUni =
             fProgramBuilder->addUniform(GrGLProgramBuilder::kVertex_Visibility,
                                         kVec4f_GrSLType, kDefault_GrSLPrecision,
                                         fProgramBuilder->rtAdjustment(),
                                         &fRtAdjustName);
     // Wire transforms
     SkTArray<GrGLProgramBuilder::TransformVarying, true>& transVs = fProgramBuilder->fCoordVaryings;
     int transformCount = transVs.count();
     for (int i = 0; i < transformCount; i++) {
         GrCoordSet coordSet = transVs[i].fCoordSet;
-        const char* coords;
+        const char* coords = NULL;
         switch (coordSet) {
-            default:
-                SkFAIL("Case missing");
-            case kPosition_GrCoordSet:
-                coords = this->positionCoords();
-                break;
             case kLocal_GrCoordSet:
                 coords = this->localCoords();
                 break;
             case kDevice_GrCoordSet:
                 coords = this->glPosition();
                 break;
         }
 
         // varying = matrix * coords (logically)
         const GrGLVarying& v = transVs[i].fV;
@@ skipping 59 matching lines @@
     for (int i = 0; i < fInputs.count(); ++i) {
         const GrGLShaderVar& attr = fInputs[i];
         // if attribute already added, don't add it again
         if (attr.getName().equals(var.getName())) {
             return false;
         }
     }
     fInputs.push_back(var);
     return true;
 }