Add stubs for a NULL renderer.

BUG=angleproject:1468

Change-Id: I2ed2b65a4b6f6ea3dda61c0467aef95e407cd38c
Reviewed-on: https://chromium-review.googlesource.com/388844
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/renderer/null/RenderbufferNULL.cpp b/src/libANGLE/renderer/null/RenderbufferNULL.cpp
new file mode 100644
index 0000000..50f54a6
--- /dev/null
+++ b/src/libANGLE/renderer/null/RenderbufferNULL.cpp
@@ -0,0 +1,46 @@
+//
+// Copyright 2016 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// RenderbufferNULL.cpp:
+//    Implements the class methods for RenderbufferNULL.
+//
+
+#include "libANGLE/renderer/null/RenderbufferNULL.h"
+
+#include "common/debug.h"
+
+namespace rx
+{
+
+RenderbufferNULL::RenderbufferNULL() : RenderbufferImpl()
+{
+}
+
+RenderbufferNULL::~RenderbufferNULL()
+{
+}
+
+gl::Error RenderbufferNULL::setStorage(GLenum internalformat, size_t width, size_t height)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+gl::Error RenderbufferNULL::setStorageMultisample(size_t samples,
+                                                  GLenum internalformat,
+                                                  size_t width,
+                                                  size_t height)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+gl::Error RenderbufferNULL::setStorageEGLImageTarget(egl::Image *image)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+}  // namespace rx