Use std::unique_ptr to signal ownership transfer in WebCompositorSupport

third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp

 /*
  * Copyright (c) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
 #include "platform/tracing/TraceEvent.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebCompositorSupport.h"
 #include "public/platform/WebExternalBitmap.h"
 #include "public/platform/WebExternalTextureLayer.h"
 #include "public/platform/WebGraphicsContext3DProvider.h"
 #include "skia/ext/texture_handle.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 #include "third_party/skia/include/gpu/gl/GrGLTypes.h"
 #include "wtf/CheckedNumeric.h"
-#include "wtf/PtrUtil.h"
 #include "wtf/typed_arrays/ArrayBufferContents.h"
 #include <algorithm>
 #include <memory>
 
 namespace blink {
 
 namespace {
 
 const float s_resourceAdjustedRatio = 0.5;
 
@@ skipping 689 matching lines @@
 
   return true;
 }
 
 GLuint DrawingBuffer::framebuffer() const {
   return m_fbo;
 }
 
 WebLayer* DrawingBuffer::platformLayer() {
   if (!m_layer) {
-    m_layer = wrapUnique(
+    m_layer =
         Platform::current()->compositorSupport()->createExternalTextureLayer(
-            this));
+            this);
 
     m_layer->setOpaque(!m_wantAlphaChannel);
     m_layer->setBlendBackgroundColor(m_wantAlphaChannel);
     m_layer->setPremultipliedAlpha(m_premultipliedAlpha);
     m_layer->setNearestNeighbor(m_filterQuality == kNone_SkFilterQuality);
     GraphicsLayer::registerContentsLayer(m_layer->layer());
   }
 
   return m_layer->layer();
 }
@@ skipping 471 matching lines @@
   // the public interface for WebGL does not support GL_TEXTURE_RECTANGLE.
   m_gl->BindTexture(GL_TEXTURE_2D, m_texture2DBinding);
 }
 
 bool DrawingBuffer::shouldUseChromiumImage() {
   return RuntimeEnabledFeatures::webGLImageChromiumEnabled() &&
          m_chromiumImageUsage == AllowChromiumImage;
 }
 
 }  // namespace blink