Add Vulkan stubs.

Currently enabled for Windows by default.

BUG=angleproject:1319

Change-Id: I87921c579bee466465fb1e3f629bb3a40fdff659
Reviewed-on: https://chromium-review.googlesource.com/328730
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
diff --git a/src/libANGLE/renderer/vulkan/ImageVk.cpp b/src/libANGLE/renderer/vulkan/ImageVk.cpp
new file mode 100644
index 0000000..0956a5e
--- /dev/null
+++ b/src/libANGLE/renderer/vulkan/ImageVk.cpp
@@ -0,0 +1,37 @@
+//
+// 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.
+//
+// ImageVk.cpp:
+//    Implements the class methods for ImageVk.
+//
+
+#include "libANGLE/renderer/vulkan/ImageVk.h"
+
+#include "common/debug.h"
+
+namespace rx
+{
+
+ImageVk::ImageVk() : ImageImpl()
+{
+}
+
+ImageVk::~ImageVk()
+{
+}
+
+egl::Error ImageVk::initialize()
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_BAD_ACCESS);
+}
+
+gl::Error ImageVk::orphan(egl::ImageSibling *sibling)
+{
+    UNIMPLEMENTED();
+    return gl::Error(GL_INVALID_OPERATION);
+}
+
+}  // namespace rx