Eliminate one copy from ImageBitmap deserialization.

third_party/WebKit/Source/core/frame/ImageBitmap.cpp

 // Copyright 2013 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 "core/frame/ImageBitmap.h"
 
 #include "core/html/HTMLCanvasElement.h"
 #include "core/html/HTMLVideoElement.h"
 #include "core/html/ImageData.h"
 #include "platform/graphics/skia/SkiaUtils.h"
@@ skipping 395 matching lines @@
     if (isPremultiplyAlphaReverted) {
         parsedOptions.premultiplyAlpha = false;
         m_image = StaticBitmapImage::create(premulSkImageToUnPremul(m_image->imageForCurrentFrame().get()));
     }
     if (!m_image)
         return;
     m_image->setOriginClean(canvas->originClean());
     m_image->setPremultiplied(parsedOptions.premultiplyAlpha);
 }
 
-ImageBitmap::ImageBitmap(std::unique_ptr<uint8_t[]> data, uint32_t width, uint32_t height, bool isImageBitmapPremultiplied, bool isImageBitmapOriginClean)
+ImageBitmap::ImageBitmap(const void* pixelData, uint32_t width, uint32_t height, bool isImageBitmapPremultiplied, bool isImageBitmapOriginClean)
 {
     SkImageInfo info = SkImageInfo::MakeN32(width, height, isImageBitmapPremultiplied ? kPremul_SkAlphaType : kUnpremul_SkAlphaType);
-    m_image = StaticBitmapImage::create(SkImage::MakeRasterCopy(SkPixmap(info, data.get(), info.bytesPerPixel() * width)));
+    SkPixmap pixmap(info, pixelData, info.bytesPerPixel() * width);
+    m_image = StaticBitmapImage::create(SkImage::MakeRasterCopy(pixmap));
     if (!m_image)
         return;
     m_image->setPremultiplied(isImageBitmapPremultiplied);
     m_image->setOriginClean(isImageBitmapOriginClean);
 }
 
 static sk_sp<SkImage> scaleSkImage(sk_sp<SkImage> skImage, unsigned resizeWidth, unsigned resizeHeight, SkFilterQuality resizeQuality)
 {
     SkImageInfo resizedInfo = SkImageInfo::Make(resizeWidth, resizeHeight, kN32_SkColorType, kUnpremul_SkAlphaType);
     RefPtr<ArrayBuffer> dstBuffer = ArrayBuffer::createOrNull(resizeWidth * resizeHeight, resizedInfo.bytesPerPixel());
@@ skipping 193 matching lines @@
 ImageBitmap* ImageBitmap::create(PassRefPtr<StaticBitmapImage> image, Optional<IntRect> cropRect, const ImageBitmapOptions& options)
 {
     return new ImageBitmap(std::move(image), cropRect, options);
 }
 
 ImageBitmap* ImageBitmap::create(PassRefPtr<StaticBitmapImage> image)
 {
     return new ImageBitmap(std::move(image));
 }
 
-ImageBitmap* ImageBitmap::create(std::unique_ptr<uint8_t[]> data, uint32_t width, uint32_t height, bool isImageBitmapPremultiplied, bool isImageBitmapOriginClean)
+ImageBitmap* ImageBitmap::create(const void* pixelData, uint32_t width, uint32_t height, bool isImageBitmapPremultiplied, bool isImageBitmapOriginClean)
 {
-    return new ImageBitmap(std::move(data), width, height, isImageBitmapPremultiplied, isImageBitmapOriginClean);
+    return new ImageBitmap(pixelData, width, height, isImageBitmapPremultiplied, isImageBitmapOriginClean);
 }
 
 void ImageBitmap::close()
 {
     if (!m_image || m_isNeutered)
         return;
     m_image.clear();
     m_isNeutered = true;
 }
 
@@ skipping 62 matching lines @@
 FloatSize ImageBitmap::elementSize(const FloatSize&) const
 {
     return FloatSize(width(), height());
 }
 
 DEFINE_TRACE(ImageBitmap)
 {
 }
 
 } // namespace blink