Add PPAPI interface for OpenGL ES 2.0 Vertex Array Objects.

ppapi/lib/gl/gles2/gl2ext_ppapi.c

Index: ppapi/lib/gl/gles2/gl2ext_ppapi.c
diff --git a/ppapi/lib/gl/gles2/gl2ext_ppapi.c b/ppapi/lib/gl/gles2/gl2ext_ppapi.c
index e5872b506c00bca24a6fba434ea047a0e3adb5a9..c37f41a15e32c3b8bc48ee2a1a4d95896625d5ed 100644
--- a/ppapi/lib/gl/gles2/gl2ext_ppapi.c
+++ b/ppapi/lib/gl/gles2/gl2ext_ppapi.c
@@ -38,6 +38,8 @@ static const struct PPB_OpenGLES2ChromiumMapSub*
     g_gles2_chromium_map_sub_interface = NULL;
 static const struct PPB_OpenGLES2Query*
     g_gles2_query_interface = NULL;
+static const struct PPB_OpenGLES2VertexArrayObject*
+    g_gles2_vertex_array_object_interface = NULL;
 static const struct PPB_OpenGLES2DrawBuffers_Dev*
     g_gles2_draw_buffers_interface = NULL;
 
@@ -75,6 +77,10 @@ GLboolean GL_APIENTRY glInitializePPAPI(
     g_gles2_query_interface =
         get_browser_interface(PPB_OPENGLES2_QUERY_INTERFACE);
   }
+  if (!g_gles2_vertex_array_object_interface) {
+    g_gles2_vertex_array_object_interface =
+        get_browser_interface(PPB_OPENGLES2_VERTEXARRAYOBJECT_INTERFACE);
+  }
   if (!g_gles2_draw_buffers_interface) {
     g_gles2_draw_buffers_interface =
         get_browser_interface(PPB_OPENGLES2_DRAWBUFFERS_DEV_INTERFACE);
@@ -129,6 +135,11 @@ const struct PPB_OpenGLES2Query* GL_APIENTRY
   return g_gles2_query_interface;
 }
 
+const struct PPB_OpenGLES2VertexArrayObject* GL_APIENTRY
+    glGetVertexArrayObjectInterfacePPAPI(void) {
+  return g_gles2_vertex_array_object_interface;
+}
+
 const struct PPB_OpenGLES2DrawBuffers_Dev* GL_APIENTRY
     glGetDrawBuffersInterfacePPAPI(void) {
   return g_gles2_draw_buffers_interface;