Add IsPath to GrGLInterface

include/gpu/gl/GrGLInterface.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLInterface_DEFINED
 #define GrGLInterface_DEFINED
 
@@ skipping 306 matching lines @@
         // Experimental: Functions for GL_NV_path_rendering. These will be
         // alphabetized with the above functions once this is fully supported
         // (and functions we are unlikely to use will possibly be omitted).
         GLPtr<GrGLGetProgramResourceLocationProc> fGetProgramResourceLocation;
         GLPtr<GrGLPathCommandsProc> fPathCommands;
         GLPtr<GrGLPathCoordsProc> fPathCoords;
         GLPtr<GrGLPathParameteriProc> fPathParameteri;
         GLPtr<GrGLPathParameterfProc> fPathParameterf;
         GLPtr<GrGLGenPathsProc> fGenPaths;
         GLPtr<GrGLDeletePathsProc> fDeletePaths;
+        GLPtr<GrGLIsPathProc> fIsPath;
         GLPtr<GrGLPathStencilFuncProc> fPathStencilFunc;
         GLPtr<GrGLStencilFillPathProc> fStencilFillPath;
         GLPtr<GrGLStencilStrokePathProc> fStencilStrokePath;
         GLPtr<GrGLStencilFillPathInstancedProc> fStencilFillPathInstanced;
         GLPtr<GrGLStencilStrokePathInstancedProc> fStencilStrokePathInstanced;
         GLPtr<GrGLPathTexGenProc> fPathTexGen;
         GLPtr<GrGLCoverFillPathProc> fCoverFillPath;
         GLPtr<GrGLCoverStrokePathProc> fCoverStrokePath;
         GLPtr<GrGLCoverFillPathInstancedProc> fCoverFillPathInstanced;
         GLPtr<GrGLCoverStrokePathInstancedProc> fCoverStrokePathInstanced;
         GLPtr<GrGLProgramPathFragmentInputGenProc> fProgramPathFragmentInputGen;
     } fFunctions;
 
     // Per-GL func callback
 #if GR_GL_PER_GL_FUNC_CALLBACK
     GrGLInterfaceCallbackProc fCallback;
     GrGLInterfaceCallbackData fCallbackData;
 #endif
 };
 
 #endif