Add vulkan files into skia repo.

src/gpu/vk/GrVkFramebuffer.cpp

Index: src/gpu/vk/GrVkFramebuffer.cpp
diff --git a/src/gpu/vk/GrVkFramebuffer.cpp b/src/gpu/vk/GrVkFramebuffer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d79895ce8ed6d90216fb4ec5c891826dcd747d2b
--- /dev/null
+++ b/src/gpu/vk/GrVkFramebuffer.cpp
@@ -0,0 +1,63 @@
+/*
+* Copyright 2016 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#include "GrVkFramebuffer.h"
+
+#include "GrVkGpu.h"
+#include "GrVkImageView.h"
+#include "GrVkRenderPass.h"
+
+GrVkFramebuffer* GrVkFramebuffer::Create(GrVkGpu* gpu,
+                                         int width, int height,
+                                         const GrVkRenderPass* renderPass,
+                                         const GrVkImageView* colorAttachment,
+                                         const GrVkImageView* resolveAttachment,
+                                         const GrVkImageView* stencilAttachment) {
+    // At the very least we need a renderPass and a colorAttachment
+    SkASSERT(renderPass);
+    SkASSERT(colorAttachment);
+    
+    VkImageView attachments[3];
+    attachments[0] = colorAttachment->imageView();
+    int numAttachments = 1;
+    if (resolveAttachment) {
+        attachments[numAttachments++] = resolveAttachment->imageView();
+    }
+    if (stencilAttachment) {
+        attachments[numAttachments++] = stencilAttachment->imageView();
+    }
+    
+    VkFramebufferCreateInfo createInfo;
+    memset(&createInfo, 0, sizeof(VkFramebufferCreateInfo));
+    createInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
+    createInfo.pNext = nullptr;
+    createInfo.flags = 0;
+    createInfo.renderPass = renderPass->vkRenderPass();
+    createInfo.attachmentCount = numAttachments;
+    createInfo.pAttachments = attachments;
+    createInfo.width = width;
+    createInfo.height = height;
+    createInfo.layers = 1;
+    
+    VkFramebuffer framebuffer;
+    VkResult err = GR_VK_CALL(gpu->vkInterface(), CreateFramebuffer(gpu->device(),
+                                                                    &createInfo,
+                                                                    nullptr,
+                                                                    &framebuffer));
+    if (err) {
+        return nullptr;
+    }
+
+    return new GrVkFramebuffer(framebuffer);
+}
+
+void GrVkFramebuffer::freeGPUData(const GrVkGpu* gpu) const {
+    SkASSERT(fFramebuffer);
+    GR_VK_CALL(gpu->vkInterface(), DestroyFramebuffer(gpu->device(), fFramebuffer, nullptr));
+}
+
+