Use std::unique_ptr to signal ownership transfer in WebCompositorSupport

third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.cpp

 // 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 "platform/graphics/CanvasSurfaceLayerBridge.h"
 
 #include "cc/layers/surface_layer.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_sequence.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/mojo/MojoHelper.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebCompositorSupport.h"
 #include "public/platform/WebLayer.h"
 #include "ui/gfx/geometry/size.h"
 #include "wtf/Functional.h"
-#include "wtf/PtrUtil.h"
 
 namespace blink {
 
 CanvasSurfaceLayerBridge::CanvasSurfaceLayerBridge(
     mojom::blink::OffscreenCanvasSurfacePtr service)
     : m_service(std::move(service)) {}
 
 CanvasSurfaceLayerBridge::~CanvasSurfaceLayerBridge() {}
 
 bool CanvasSurfaceLayerBridge::createSurfaceLayer(int canvasWidth,
                                                   int canvasHeight) {
   if (!m_service->GetSurfaceId(&m_surfaceId))
     return false;
 
   cc::SurfaceLayer::SatisfyCallback satisfyCallback =
       convertToBaseCallback(WTF::bind(
           &CanvasSurfaceLayerBridge::satisfyCallback, WTF::unretained(this)));
   cc::SurfaceLayer::RequireCallback requireCallback =
       convertToBaseCallback(WTF::bind(
           &CanvasSurfaceLayerBridge::requireCallback, WTF::unretained(this)));
   m_surfaceLayer = cc::SurfaceLayer::Create(std::move(satisfyCallback),
                                             std::move(requireCallback));
   m_surfaceLayer->SetSurfaceId(m_surfaceId, 1.f,
                                gfx::Size(canvasWidth, canvasHeight));
 
-  m_webLayer = wrapUnique(
-      Platform::current()->compositorSupport()->createLayerFromCCLayer(
-          m_surfaceLayer.get()));
+  m_webLayer = Platform::current()->compositorSupport()->createLayerFromCCLayer(
+      m_surfaceLayer.get());
   GraphicsLayer::registerContentsLayer(m_webLayer.get());
   return true;
 }
 
 void CanvasSurfaceLayerBridge::satisfyCallback(
     const cc::SurfaceSequence& sequence) {
   m_service->Satisfy(sequence);
 }
 
 void CanvasSurfaceLayerBridge::requireCallback(
     const cc::SurfaceId& surfaceId,
     const cc::SurfaceSequence& sequence) {
   m_service->Require(surfaceId, sequence);
 }
 
 }  // namespace blink