Add ES3 commands GetVertexAttribI{u}iv to GPU command buffer.

mojo/gpu/mojo_gles2_impl_autogen.cc

Index: mojo/gpu/mojo_gles2_impl_autogen.cc
diff --git a/mojo/gpu/mojo_gles2_impl_autogen.cc b/mojo/gpu/mojo_gles2_impl_autogen.cc
index a65388f95f3d7fb6f01b36a225ead411a0583836..2a6169baf9a29d5fe201ed1845deb6b4feff1887 100644
--- a/mojo/gpu/mojo_gles2_impl_autogen.cc
+++ b/mojo/gpu/mojo_gles2_impl_autogen.cc
@@ -646,6 +646,16 @@ void MojoGLES2Impl::GetVertexAttribiv(GLuint index,
   MojoGLES2MakeCurrent(context_);
   glGetVertexAttribiv(index, pname, params);
 }
+void MojoGLES2Impl::GetVertexAttribIiv(GLuint index,
+                                       GLenum pname,
+                                       GLint* params) {
+  NOTREACHED() << "Unimplemented GetVertexAttribIiv.";
+}
+void MojoGLES2Impl::GetVertexAttribIuiv(GLuint index,
+                                        GLenum pname,
+                                        GLuint* params) {
+  NOTREACHED() << "Unimplemented GetVertexAttribIuiv.";
+}
 void MojoGLES2Impl::GetVertexAttribPointerv(GLuint index,
                                             GLenum pname,
                                             void** pointer) {