fix up GrGLProgrambuilder precision on varyings

src/gpu/gl/builders/GrGLProgramBuilder.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 "GrGLProgramBuilder.h"
 
 #include "GrAutoLocaleSetter.h"
@@ skipping 47 matching lines @@
     , fXferProcessor(nullptr)
     , fArgs(args)
     , fGpu(gpu)
     , fUniforms(kVarsPerBlock)
     , fSamplerUniforms(4)
     , fSeparableVaryingInfos(kVarsPerBlock) {
 }
 
 void GrGLProgramBuilder::addVarying(const char* name,
                                     GrGLVarying* varying,
-                                    GrSLPrecision fsPrecision) {
+                                    GrSLPrecision precision) {
     SkASSERT(varying);
     if (varying->vsVarying()) {
-        fVS.addVarying(name, varying);
+        fVS.addVarying(name, precision, varying);
     }
     if (this->primitiveProcessor().willUseGeoShader()) {
-        fGS.addVarying(name, varying);
+        fGS.addVarying(name, precision, varying);
     }
     if (varying->fsVarying()) {
-        fFS.addVarying(varying, fsPrecision);
+        fFS.addVarying(varying, precision);
     }
 }
 
 void GrGLProgramBuilder::addPassThroughAttribute(const GrPrimitiveProcessor::Attribute* input,
                                                  const char* output) {
     GrSLType type = GrVertexAttribTypeToSLType(input->fType);
     GrGLVertToFrag v(type);
     this->addVarying(input->fName, &v);
     fVS.codeAppendf("%s = %s;", v.vsOut(), input->fName);
     fFS.codeAppendf("%s = %s;", output, v.fsIn());
@@ skipping 427 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 GrGLInstalledFragProcs::~GrGLInstalledFragProcs() {
     int numProcs = fProcs.count();
     for (int i = 0; i < numProcs; ++i) {
         delete fProcs[i];
     }
 }