Eliminate copies of encoded image data

third_party/WebKit/Source/platform/image-decoders/SharedBufferSegmentReader.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 "SharedBufferSegmentReader.h"
+
+namespace blink {
+
+SharedBufferSegmentReader::SharedBufferSegmentReader(PassRefPtr<SharedBuffer> buffer)
+: m_sharedBuffer(buffer) {}
+
+size_t SharedBufferSegmentReader::size() const
+{
+    return m_sharedBuffer->size();
+}
+
+size_t SharedBufferSegmentReader::getSomeData(const char*& data, size_t position) const
+{
+    return m_sharedBuffer->getSomeData(data, position);
+}
+
+PassRefPtr<SkData> SharedBufferSegmentReader::getAsSkData() const
+{
+    return m_sharedBuffer->getAsSkData();
+}
+
+} // namespace blink
+