Added the Vulkan Context Provider implementation.

content/browser/compositor/browser_compositor_output_surface.cc

 // Copyright 2014 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/browser_compositor_output_surface.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 36 matching lines @@
       synthetic_begin_frame_source_(new cc::SyntheticBeginFrameSource(
           task_runner,
           cc::BeginFrameArgs::DefaultInterval())),
       reflector_(nullptr),
       use_begin_frame_scheduling_(
           base::CommandLine::ForCurrentProcess()->HasSwitch(
               cc::switches::kEnableBeginFrameScheduling)) {
   Initialize();
 }
 
+BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
+    const scoped_refptr<cc::VulkanContextProvider>& vulkan_context_provider,
+    const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager)
+    : OutputSurface(nullptr, nullptr, vulkan_context_provider, nullptr),
+      vsync_manager_(vsync_manager),
+      reflector_(nullptr) {
+  Initialize();
+}
+
 BrowserCompositorOutputSurface::~BrowserCompositorOutputSurface() {
   if (reflector_)
     reflector_->DetachFromOutputSurface();
   DCHECK(!reflector_);
   if (!HasClient())
     return;
 
   // When BeginFrame scheduling is enabled, vsync info is not routed to renderer
   // by using |vsync_manager_|. Instead, BeginFrame message is used.
   if (!use_begin_frame_scheduling_)
@@ skipping 66 matching lines @@
 BrowserCompositorOutputSurface::CreateCompositionStartedCallback() {
   return base::Closure();
 }
 
 cc::OverlayCandidateValidator*
 BrowserCompositorOutputSurface::GetOverlayCandidateValidator() const {
   return overlay_candidate_validator_.get();
 }
 
 }  // namespace content