Add WSI functions to GrVkInterface

src/gpu/vk/GrVkStencilAttachment.h

 /*
 * Copyright 2015 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #ifndef GrVkStencil_DEFINED
 #define GrVkStencil_DEFINED
 
 #include "GrStencilAttachment.h"
 #include "GrVkImage.h"
-#include "vulkan/vulkan.h"
+#include "vk/GrVkDefines.h"
 
 class GrVkImageView;
 class GrVkGpu;
 
 class GrVkStencilAttachment : public GrStencilAttachment, public GrVkImage {
 public:
     struct Format {
         VkFormat  fInternalFormat;
         int  fStencilBits;
         int  fTotalBits;
@@ skipping 26 matching lines @@
                           const GrVkImageView* stencilView);
 
     GrVkGpu* getVkGpu() const;
 
     Format fFormat;
 
     const GrVkImageView*       fStencilView;
 };
 
 #endif