Add vulkan files into skia repo.

src/gpu/vk/GrVkVertexBuffer.cpp

Index: src/gpu/vk/GrVkVertexBuffer.cpp
diff --git a/src/gpu/vk/GrVkVertexBuffer.cpp b/src/gpu/vk/GrVkVertexBuffer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..46c6d28f23d2bd7ec8b704635b7f814e58a98732
--- /dev/null
+++ b/src/gpu/vk/GrVkVertexBuffer.cpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrVkVertexBuffer.h"
+#include "GrVkGpu.h"
+
+GrVkVertexBuffer::GrVkVertexBuffer(GrVkGpu* gpu, const GrVkBuffer::Desc& desc,
+                                   const GrVkBuffer::Resource* bufferResource)
+    : INHERITED(gpu, desc.fSizeInBytes, desc.fDynamic, false)
+    , GrVkBuffer(desc, bufferResource) {
+    this->registerWithCache();
+}
+
+GrVkVertexBuffer* GrVkVertexBuffer::Create(GrVkGpu* gpu, size_t size, bool dynamic) {
+    GrVkBuffer::Desc desc;
+    desc.fDynamic = dynamic;
+    desc.fType = GrVkBuffer::kVertex_Type;
+    desc.fSizeInBytes = size;
+
+    const GrVkBuffer::Resource* bufferResource = GrVkBuffer::Create(gpu, desc);
+    if (!bufferResource) {
+        return nullptr;
+    }
+
+    GrVkVertexBuffer* buffer = new GrVkVertexBuffer(gpu, desc, bufferResource);
+    if (!buffer) {
+        bufferResource->unref(gpu);
+    }
+    return buffer;
+}
+
+void GrVkVertexBuffer::onRelease() {
+    if (!this->wasDestroyed()) {
+        this->vkRelease(this->getVkGpu());
+    }
+
+    INHERITED::onRelease();
+}
+
+void GrVkVertexBuffer::onAbandon() {
+    this->vkAbandon();
+    INHERITED::onAbandon();
+}
+
+void* GrVkVertexBuffer::onMap() {
+    if (!this->wasDestroyed()) {
+        return this->vkMap(this->getVkGpu());
+    } else {
+        return NULL;
+    }
+}
+
+void GrVkVertexBuffer::onUnmap() {
+    if (!this->wasDestroyed()) {
+        this->vkUnmap(this->getVkGpu());
+    }
+}
+
+bool GrVkVertexBuffer::onUpdateData(const void* src, size_t srcSizeInBytes) {
+    if (!this->wasDestroyed()) {
+        return this->vkUpdateData(this->getVkGpu(), src, srcSizeInBytes);
+    } else {
+        return false;
+    }
+}
+
+GrVkGpu* GrVkVertexBuffer::getVkGpu() const {
+    SkASSERT(!this->wasDestroyed());
+    return static_cast<GrVkGpu*>(this->getGpu());
+}
+