Added the Vulkan Context Provider implementation.

cc/output/vulkan_derived_context_provider.cc

+// Copyright 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.
+
+#include "cc/output/vulkan_derived_context_provider.h"
+
+#include "gpu/vulkan/vulkan_device_queue.h"
+#include "gpu/vulkan/vulkan_surface.h"
+
+namespace cc {
+
+scoped_refptr<VulkanDerivedContextProvider>
+VulkanDerivedContextProvider::Create(
+    scoped_refptr<VulkanContextProvider> parent_context_provider,
+    gfx::AcceleratedWidget widget) {
+  scoped_refptr<VulkanDerivedContextProvider> context_provider(
+      new VulkanDerivedContextProvider(parent_context_provider, widget));
+  if (!context_provider->Initialize())
+    return nullptr;
+  return context_provider;
+}
+
+bool VulkanDerivedContextProvider::Initialize() {
+  if (!surface_->Initialize(GetDeviceQueue(),
+                            gpu::VulkanSurface::DEFAULT_SURFACE_FORMAT)) {
+    return false;
+  }
+
+  return true;
+}
+
+void VulkanDerivedContextProvider::Destroy() {
+  surface_->Destroy();
+}
+
+gpu::VulkanDeviceQueue* VulkanDerivedContextProvider::GetDeviceQueue() {
+  return parent_context_provider_->GetDeviceQueue();
+}
+
+void VulkanDerivedContextProvider::SwapBuffers() {
+  surface_->SwapBuffers();
+}
+
+VulkanDerivedContextProvider::VulkanDerivedContextProvider(
+    scoped_refptr<VulkanContextProvider> parent_context_provider,
+    gfx::AcceleratedWidget widget)
+    : parent_context_provider_(parent_context_provider),
+      surface_(gpu::VulkanSurface::CreateViewSurface(widget)) {
+  DCHECK(parent_context_provider_);
+}
+
+VulkanDerivedContextProvider::~VulkanDerivedContextProvider() {}
+
+}  // namespace cc