Add support for glMemoryGlyphIndexArrayNV

src/gpu/gl/GrGLPathRendering.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLPathRendering_DEFINED
 #define GrGLPathRendering_DEFINED
 
@@ skipping 81 matching lines @@
     GrGLvoid deletePaths(GrGLuint path, GrGLsizei range);
 
 private:
     /**
      * Mark certain functionality as not supported if the driver version is too
      * old and a backup implementation is not practical.
      */
     struct Caps {
         bool stencilThenCoverSupport : 1;
         bool fragmentInputGenSupport : 1;
+        bool glyphLoadingSupport     : 1;
     };
     const Caps& caps() const { return fCaps; }
 
     void flushPathStencilSettings(SkPath::FillType fill);
 
     // NV_path_rendering v1.2
     void stencilThenCoverFillPath(GrGLuint path, GrGLenum fillMode,
                                   GrGLuint mask, GrGLenum coverMode);
 
     void stencilThenCoverStrokePath(GrGLuint path, GrGLint reference,
@@ skipping 17 matching lines @@
     struct PathTexGenData {
         GrGLenum  fMode;
         GrGLint   fNumComponents;
         GrGLfloat fCoefficients[3 * 3];
     };
     int fHWActivePathTexGenSets;
     SkTArray<PathTexGenData, true> fHWPathTexGenSettings;
 };
 
 #endif