fix for calling bindFragDataLocation on OpenGL 2.1

src/gpu/gl/builders/GrGLFragmentShaderBuilder.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 "GrGLFragmentShaderBuilder.h"
 #include "GrGLProgramBuilder.h"
 #include "../GrGLGpu.h"
@@ skipping 246 matching lines @@
     fProgramBuilder->appendUniformDecls(GrGLProgramBuilder::kFragment_Visibility,
                                         &this->uniforms());
     this->appendDecls(fInputs, &this->inputs());
     // We shouldn't have declared outputs on 1.10
     SkASSERT(k110_GrGLSLGeneration != gpu->glslGeneration() || fOutputs.empty());
     this->appendDecls(fOutputs, &this->outputs());
     return this->finalize(programId, GR_GL_FRAGMENT_SHADER, shaderIds);
 }
 
 void GrGLFragmentShaderBuilder::bindFragmentShaderLocations(GrGLuint programID) {
-    // ES 3.00 requires custom color output but doesn't support bindFragDataLocation
-    if (fHasCustomColorOutput &&
-        kGLES_GrGLStandard != fProgramBuilder->gpu()->ctxInfo().standard()) {
+    if (fHasCustomColorOutput && fProgramBuilder->gpu()->glCaps().bindFragDataLocationSupport()) {
         GL_CALL(BindFragDataLocation(programID, 0, declared_color_output_name()));
     }
     if (fHasSecondaryOutput) {
         GL_CALL(BindFragDataLocationIndexed(programID, 0, 1, dual_source_output_name()));
     }
 }
 
 void GrGLFragmentShaderBuilder::addVarying(GrGLVarying* v, GrSLPrecision fsPrec) {
     v->fFsIn = v->fVsOut;
     if (v->fGsOut) {
         v->fFsIn = v->fGsOut;
     }
     fInputs.push_back().set(v->fType, GrGLShaderVar::kVaryingIn_TypeModifier, v->fFsIn, fsPrec);
 }