Add gpu support for Apple specific 'Vertex Arrays' functions

src/gpu/gl/GrGLCaps.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLCaps.h"
 
@@ skipping 217 matching lines @@
         fDiscardRenderTargetSupport = true;
         fInvalidateFBType = kDiscard_InvalidateFBType;
     }
 
     if (kARM_GrGLVendor == ctxInfo.vendor() || kImagination_GrGLVendor == ctxInfo.vendor()) {
         fFullClearIsFree = true;
     }
 
     if (kGL_GrGLStandard == standard) {
         fVertexArrayObjectSupport = version >= GR_GL_VER(3, 0) ||
-                                    ctxInfo.hasExtension("GL_ARB_vertex_array_object");
+                                    ctxInfo.hasExtension("GL_ARB_vertex_array_object") ||
+                                    ctxInfo.hasExtension("GL_APPLE_vertex_array_object");
     } else {
         fVertexArrayObjectSupport = version >= GR_GL_VER(3, 0) ||
                                     ctxInfo.hasExtension("GL_OES_vertex_array_object");
     }
 
     if (kGLES_GrGLStandard == standard) {
         if (ctxInfo.hasExtension("GL_EXT_shader_framebuffer_fetch")) {
             fFBFetchSupport = true;
             fFBFetchColorName = "gl_LastFragData[0]";
             fFBFetchExtensionString = "GL_EXT_shader_framebuffer_fetch";
@@ skipping 622 matching lines @@
     r.appendf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO"));
     r.appendf("Fragment coord conventions support: %s\n",
              (fFragCoordsConventionSupport ? "YES": "NO"));
     r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO"));
     r.appendf("Use non-VBO for dynamic data: %s\n",
              (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO"));
     r.appendf("Full screen clear is free: %s\n", (fFullClearIsFree ? "YES" : "NO"));
     r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES" : "NO"));
     return r;
 }