skia: Make the validate match interface for *_draw_instanced

src/gpu/gl/GrGLAssembleInterface.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 "GrGLAssembleInterface.h"
@@ skipping 299 matching lines @@
         GET_PROC(InvalidateFramebuffer);
         GET_PROC(InvalidateSubFramebuffer);
         GET_PROC(InvalidateTexImage);
         GET_PROC(InvalidateTexSubImage);
     }
 
     if (glVer >= GR_GL_VER(4,3) || extensions.has("GL_ARB_program_interface_query")) {
         GET_PROC(GetProgramResourceLocation);
     }
 
-    if (glVer >= GR_GL_VER(3,1) || extensions.has("GL_ARB_draw_instanced")) {
+    if (glVer >= GR_GL_VER(3,1) || extensions.has("GL_ARB_draw_instanced") ||
+        extensions.has("GL_EXT_draw_instanced")) {
         GET_PROC(DrawArraysInstanced);
         GET_PROC(DrawElementsInstanced);
     }
 
     if (glVer >= GR_GL_VER(3,2) || extensions.has("GL_ARB_instanced_arrays")) {
         GET_PROC(VertexAttribDivisor);
     }
 
     if (extensions.has("GL_NV_bindless_texture")) {
         GET_PROC_SUFFIX(GetTextureHandle, NV);
@@ skipping 436 matching lines @@
 
     if (extensions.has("GL_CHROMIUM_bind_uniform_location")) {
         GET_PROC_SUFFIX(BindUniformLocation, CHROMIUM);
     }
 
     interface->fStandard = kGLES_GrGLStandard;
     interface->fExtensions.swap(&extensions);
 
     return interface;
 }