Added the Vulkan Context Provider implementation.

content/browser/compositor/vulkan_browser_compositor_output_surface.cc

+// Copyright (c) 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 "content/browser/compositor/vulkan_browser_compositor_output_surface.h"
+
+#include "cc/output/output_surface_client.h"
+#include "content/browser/renderer_host/render_widget_host_impl.h"
+#include "gpu/vulkan/vulkan_surface.h"
+
+namespace content {
+
+VulkanBrowserCompositorOutputSurface::VulkanBrowserCompositorOutputSurface(
+    const scoped_refptr<cc::VulkanContextProvider>& context,
+    const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager)
+    : BrowserCompositorOutputSurface(context, vsync_manager) {}
+
+VulkanBrowserCompositorOutputSurface::~VulkanBrowserCompositorOutputSurface() {
+  DCHECK(!surface_);
+}
+
+bool VulkanBrowserCompositorOutputSurface::Initialize(
+    gfx::AcceleratedWidget widget) {
+  DCHECK(!surface_);
+  std::unique_ptr<gpu::VulkanSurface> surface(
+      gpu::VulkanSurface::CreateViewSurface(widget));
+  if (!surface->Initialize(vulkan_context_provider()->GetDeviceQueue(),
+                           gpu::VulkanSurface::DEFAULT_SURFACE_FORMAT)) {
+    return false;
+  }
+  surface_ = std::move(surface);
+
+  return true;
+}
+
+void VulkanBrowserCompositorOutputSurface::Destroy() {
+  if (surface_) {
+    surface_->Destroy();
+    surface_.reset();
+  }
+}
+
+void VulkanBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted(
+    const std::vector<ui::LatencyInfo>& latency_info,
+    gfx::SwapResult result) {
+  RenderWidgetHostImpl::CompositorFrameDrawn(latency_info);
+  OnSwapBuffersComplete();
+}
+
+void VulkanBrowserCompositorOutputSurface::SwapBuffers(
+    cc::CompositorFrame* frame) {
+  surface_->SwapBuffers();
+  PostSwapBuffersComplete();
+  client_->DidSwapBuffers();
+}
+
+}  // namespace content