Use indexed extensions on ES3.

src/gpu/gl/GrGLInterface.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "gl/GrGLInterface.h"
 #include "gl/GrGLExtensions.h"
@@ skipping 345 matching lines @@
     }
 
     // Dual source blending
     if (kDesktop_GrGLBinding == binding &&
         (glVer >= GR_GL_VER(3,3) || extensions.has("GL_ARB_blend_func_extended"))) {
         if (NULL == fBindFragDataLocationIndexed) {
             return false;
         }
     }
 
-    if (kDesktop_GrGLBinding == binding && glVer >= GR_GL_VER(3, 0)) {
+    // glGetStringi was added in version 3.0 of both desktop and ES.
+    if (glVer >= GR_GL_VER(3, 0)) {
         if (NULL == fGetStringi) {
             return false;
         }
     }
 
     if (kDesktop_GrGLBinding == binding) {
         if (glVer >= GR_GL_VER(3, 0) || extensions.has("GL_ARB_vertex_array_object")) {
             if (NULL == fBindVertexArray ||
                 NULL == fDeleteVertexArrays ||
                 NULL == fGenVertexArrays) {
                 return false;
             }
         }
     } else {
         if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_OES_vertex_array_object")) {
             if (NULL == fBindVertexArray ||
                 NULL == fDeleteVertexArrays ||
                 NULL == fGenVertexArrays) {
                 return false;
             }
         }
     }
 
     return true;
 }