Add vulkan files into skia repo.

src/gpu/vk/GrVkFramebuffer.h

+/*
+* Copyright 2016 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#ifndef GrVkFramebuffer_DEFINED
+#define GrVkFramebuffer_DEFINED
+
+#include "GrTypes.h"
+
+#include "GrVkResource.h"
+
+#include "vulkan/vulkan.h"
+
+class GrVkGpu;
+class GrVkImageView;
+class GrVkRenderPass;
+
+class GrVkFramebuffer : public GrVkResource {
+public:
+    static GrVkFramebuffer* Create(GrVkGpu* gpu,
+                                   int width, int height,
+                                   const GrVkRenderPass* renderPass,
+                                   const GrVkImageView* colorAttachment,
+                                   const GrVkImageView* resolveAttachment,
+                                   const GrVkImageView* stencilAttachment);
+
+    VkFramebuffer framebuffer() const { return fFramebuffer; }
+
+private:
+    GrVkFramebuffer(VkFramebuffer framebuffer) : INHERITED(), fFramebuffer(framebuffer) {}
+
+    GrVkFramebuffer(const GrVkFramebuffer&);
+    GrVkFramebuffer& operator=(const GrVkFramebuffer&);
+
+    void freeGPUData(const GrVkGpu* gpu) const override;
+
+    VkFramebuffer  fFramebuffer;
+
+    typedef GrVkResource INHERITED;
+};
+
+#endif