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

gpu/vulkan/vulkan_export.h

Index: gpu/vulkan/vulkan_export.h
diff --git a/gpu/vulkan/vulkan_export.h b/gpu/vulkan/vulkan_export.h
new file mode 100644
index 0000000000000000000000000000000000000000..0a0d1c205cedceb8a93f784a186dc2c9430fc51f
--- /dev/null
+++ b/gpu/vulkan/vulkan_export.h
@@ -0,0 +1,29 @@
+// 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 GPU_VULKAN_VULKAN_EXPORT_H_
+#define GPU_VULKAN_VULKAN_EXPORT_H_
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(VULKAN_IMPLEMENTATION)
+#define VULKAN_EXPORT __declspec(dllexport)
+#else
+#define VULKAN_EXPORT __declspec(dllimport)
+#endif  // defined(GL_IMPLEMENTATION)
+
+#else  // defined(WIN32)
+#if defined(VULKAN_IMPLEMENTATION)
+#define VULKAN_EXPORT __attribute__((visibility("default")))
+#else
+#define VULKAN_EXPORT
+#endif
+#endif
+
+#else  // defined(COMPONENT_BUILD)
+#define VULKAN_EXPORT
+#endif
+
+#endif  // GPU_VULKAN_VULKAN_EXPORT_H_