Added initial Vulkan build files as well as a basic implementation file.

ui/vulkan/vulkan_implementation.h

Index: ui/vulkan/vulkan_implementation.h
diff --git a/ui/vulkan/vulkan_implementation.h b/ui/vulkan/vulkan_implementation.h
new file mode 100644
index 0000000000000000000000000000000000000000..256460ee7eadcfb4bb65af40034ca8ae7235d334
--- /dev/null
+++ b/ui/vulkan/vulkan_implementation.h
@@ -0,0 +1,14 @@
+// Copyright (c) 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef UI_VULKAN_VULKAN_IMPLEMENTATION_H_
+#define UI_VULKAN_VULKAN_IMPLEMENTATION_H_
+
+namespace gfx {
+
+bool InitializeVulkan();
+
+}  // namespace gfx
+
+#endif  // UI_VULKAN_VULKAN_WSI_API_IMPLEMENTATION_H_