convert //gpu to std::unique_ptr

gpu/vulkan/vulkan_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 "gpu/vulkan/vulkan_surface.h"
 
 #include <vulkan/vulkan.h>
 
 #include "base/macros.h"
 #include "gpu/vulkan/vulkan_command_buffer.h"
@@ skipping 140 matching lines @@
 bool VulkanSurface::InitializeOneOff() {
   if (!InitializeVulkan())
     return false;
 
   return true;
 }
 
 VulkanSurface::~VulkanSurface() {}
 
 // static
-scoped_ptr<VulkanSurface> VulkanSurface::CreateViewSurface(
+std::unique_ptr<VulkanSurface> VulkanSurface::CreateViewSurface(
     gfx::AcceleratedWidget window) {
-  return scoped_ptr<VulkanSurface>(new VulkanWSISurface(window));
+  return std::unique_ptr<VulkanSurface>(new VulkanWSISurface(window));
 }
 
 VulkanSurface::VulkanSurface() {}
 
 }  // namespace gpu