Fixed compilation errors in vulkan_renderer.h with enable_vulkan Flag.

cc/output/vulkan_renderer.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 "cc/output/vulkan_renderer.h"
 
 namespace cc {
 
 VulkanRenderer::~VulkanRenderer() {}
 
-void VulkanRenderer::SwapBuffers(const CompositorFrameMetadata& metadata) {
-  CompositorFrame* compositor_frame = nullptr;
-  output_surface_->SwapBuffers(compositor_frame);
-}
-
-void VulkanRenderer::ReceiveSwapBuffersAck(const CompositorFrameAck& ack) {
-  NOTIMPLEMENTED();
+void VulkanRenderer::SwapBuffers(CompositorFrameMetadata metadata) {
+  CompositorFrame compositor_frame;
+  compositor_frame.metadata = std::move(metadata);
+  output_surface_->SwapBuffers(std::move(compositor_frame));
 }
 
 VulkanRenderer::VulkanRenderer(const RendererSettings* settings,
                                OutputSurface* output_surface,
                                ResourceProvider* resource_provider,
                                TextureMailboxDeleter* texture_mailbox_deleter,
                                int highp_threshold_min)
     : DirectRenderer(settings, output_surface, resource_provider) {}
 
 void VulkanRenderer::DidChangeVisibility() {
@@ skipping 45 matching lines @@
 }
 
 void VulkanRenderer::EnsureScissorTestEnabled() {
   NOTIMPLEMENTED();
 }
 
 void VulkanRenderer::EnsureScissorTestDisabled() {
   NOTIMPLEMENTED();
 }
 
-void VulkanRenderer::DiscardBackbuffer() {
-  NOTIMPLEMENTED();
-}
-
-void VulkanRenderer::EnsureBackbuffer() {
-  NOTIMPLEMENTED();
-}
-
 void VulkanRenderer::CopyCurrentRenderPassToBitmap(
     DrawingFrame* frame,
     std::unique_ptr<CopyOutputRequest> request) {
   NOTIMPLEMENTED();
 }
 
+bool VulkanRenderer::CanPartialSwap() {
+  NOTIMPLEMENTED();
+  return false;
+}
+
 }  // namespace cc