fix for calling bindFragDataLocation on OpenGL 2.1

src/gpu/gl/GrGLCaps.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrGLCaps_DEFINED
 #define GrGLCaps_DEFINED
@@ skipping 239 matching lines @@
     bool readPixelsSupported(const GrGLInterface* intf,
                              GrGLenum format,
                              GrGLenum type,
                              GrGLenum currFboFormat) const;
 
     bool isCoreProfile() const { return fIsCoreProfile; }
 
 
     bool fullClearIsFree() const { return fFullClearIsFree; }
 
+    bool bindFragDataLocationSupport() const { return fBindFragDataLocationSupport; }
+
     /**
      * Returns a string containing the caps info.
      */
     SkString dump() const override;
 
     /**
      * LATC can appear under one of three possible names. In order to know
      * which GL internal format to use, we need to keep track of which name
      * we found LATC under. The default is LATC.
      */
@@ skipping 90 matching lines @@
     bool fFragCoordsConventionSupport : 1;
     bool fVertexArrayObjectSupport : 1;
     bool fInstancedDrawingSupport : 1;
     bool fDirectStateAccessSupport : 1;
     bool fDebugSupport : 1;
     bool fES2CompatibilitySupport : 1;
     bool fMultisampleDisableSupport : 1;
     bool fUseNonVBOVertexAndIndexDynamicData : 1;
     bool fIsCoreProfile : 1;
     bool fFullClearIsFree : 1;
+    bool fBindFragDataLocationSupport : 1;
 
     struct ReadPixelsSupportedFormat {
         GrGLenum fFormat;
         GrGLenum fType;
         GrGLenum fFboFormat;
 
         bool operator==(const ReadPixelsSupportedFormat& rhs) const {
             return fFormat    == rhs.fFormat
                 && fType      == rhs.fType
                 && fFboFormat == rhs.fFboFormat;
@@ skipping 82 matching lines @@
 
     AdvBlendEqInteraction fAdvBlendEqInteraction;
 
     friend class GrGLCaps;  // For initialization.
 
     typedef GrShaderCaps INHERITED;
 };
 
 
 #endif