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/BufferNULL.cpp b/src/libANGLE/renderer/null/BufferNULL.cpp
new file mode 100644
index 0000000..766e78b
--- /dev/null
+++ b/src/libANGLE/renderer/null/BufferNULL.cpp
@@ -0,0 +1,74 @@
+//
+// 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.
+//
+// BufferNULL.cpp:
+//    Implements the class methods for BufferNULL.
+//
+
+#include "libANGLE/renderer/null/BufferNULL.h"
+
+#include "common/debug.h"
+
+namespace rx
+{
+
+BufferNULL::BufferNULL() : BufferImpl()
+{
+}
+
+BufferNULL::~BufferNULL()
+{
+}
+
+gl::Error BufferNULL::setData(GLenum target, const void *data, size_t size, GLenum usage)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+gl::Error BufferNULL::setSubData(GLenum target, const void *data, size_t size, size_t offset)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+gl::Error BufferNULL::copySubData(BufferImpl *source,
+                                  GLintptr sourceOffset,
+                                  GLintptr destOffset,
+                                  GLsizeiptr size)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+gl::Error BufferNULL::map(GLenum access, GLvoid **mapPtr)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+gl::Error BufferNULL::mapRange(size_t offset, size_t length, GLbitfield access, GLvoid **mapPtr)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+gl::Error BufferNULL::unmap(GLboolean *result)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+gl::Error BufferNULL::getIndexRange(GLenum type,
+                                    size_t offset,
+                                    size_t count,
+                                    bool primitiveRestartEnabled,
+                                    gl::IndexRange *outRange)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+}  // namespace rx