Eliminate one copy from ImageBitmap deserialization.

third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.cpp

 // 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 "bindings/core/v8/ScriptValueSerializer.h"
 
 #include "bindings/core/v8/Transferables.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
 #include "bindings/core/v8/V8ArrayBufferView.h"
 #include "bindings/core/v8/V8Blob.h"
@@ skipping 1794 matching lines @@
     if (!doReadUint32(&isOriginClean))
         return false;
     uint32_t isPremultiplied;
     if (!doReadUint32(&isPremultiplied))
         return false;
     uint32_t width;
     uint32_t height;
     uint32_t pixelDataLength;
     if (!doReadImageDataProperties(&width, &height, &pixelDataLength))
         return false;
-    std::unique_ptr<uint8_t[]> pixelData = wrapArrayUnique(new uint8_t[pixelDataLength]);
-    memcpy(pixelData.get(), m_buffer + m_position, pixelDataLength);
+    const void* pixelData = m_buffer + m_position;
     m_position += pixelDataLength;
-    ImageBitmap* imageBitmap = ImageBitmap::create(std::move(pixelData), width, height, isPremultiplied, isOriginClean);
+    ImageBitmap* imageBitmap = ImageBitmap::create(pixelData, width, height, isPremultiplied, isOriginClean);
     if (!imageBitmap)
         return false;
     *value = toV8(imageBitmap, m_scriptState->context()->Global(), isolate());
     return !value->IsEmpty();
 }
 
 bool SerializedScriptValueReader::readCompositorProxy(v8::Local<v8::Value>* value)
 {
     uint32_t attributes;
     uint64_t element;
@@ skipping 664 matching lines @@
         return false;
     uint32_t objectReference = m_openCompositeReferenceStack[m_openCompositeReferenceStack.size() - 1];
     m_openCompositeReferenceStack.shrink(m_openCompositeReferenceStack.size() - 1);
     if (objectReference >= m_objectPool.size())
         return false;
     *object = m_objectPool[objectReference];
     return true;
 }
 
 } // namespace blink