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diff --git a/chromium/third_party/blink/renderer/platform/wtf/typed_arrays/uint8_array.h b/chromium/third_party/blink/renderer/platform/wtf/typed_arrays/uint8_array.h
new file mode 100644
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+++ b/chromium/third_party/blink/renderer/platform/wtf/typed_arrays/uint8_array.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2009 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_TYPED_ARRAYS_UINT8_ARRAY_H_
+#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_TYPED_ARRAYS_UINT8_ARRAY_H_
+
+#include "third_party/blink/renderer/platform/wtf/typed_arrays/integral_typed_array_base.h"
+
+namespace WTF {
+
+class ArrayBuffer;
+
+class Uint8Array : public IntegralTypedArrayBase<unsigned char> {
+ public:
+  static inline scoped_refptr<Uint8Array> Create(unsigned length);
+  static inline scoped_refptr<Uint8Array> Create(const unsigned char* array,
+                                                 unsigned length);
+  static inline scoped_refptr<Uint8Array> Create(scoped_refptr<ArrayBuffer>,
+                                                 unsigned byte_offset,
+                                                 unsigned length);
+
+  using TypedArrayBase<unsigned char>::Set;
+  using IntegralTypedArrayBase<unsigned char>::Set;
+
+  ViewType GetType() const override { return kTypeUint8; }
+
+ protected:
+  inline Uint8Array(scoped_refptr<ArrayBuffer>,
+                    unsigned byte_offset,
+                    unsigned length);
+  // Make constructor visible to superclass.
+  friend class TypedArrayBase<unsigned char>;
+};
+
+scoped_refptr<Uint8Array> Uint8Array::Create(unsigned length) {
+  return TypedArrayBase<unsigned char>::Create<Uint8Array>(length);
+}
+
+scoped_refptr<Uint8Array> Uint8Array::Create(const unsigned char* array,
+                                             unsigned length) {
+  return TypedArrayBase<unsigned char>::Create<Uint8Array>(array, length);
+}
+
+scoped_refptr<Uint8Array> Uint8Array::Create(scoped_refptr<ArrayBuffer> buffer,
+                                             unsigned byte_offset,
+                                             unsigned length) {
+  return TypedArrayBase<unsigned char>::Create<Uint8Array>(std::move(buffer),
+                                                           byte_offset, length);
+}
+
+Uint8Array::Uint8Array(scoped_refptr<ArrayBuffer> buffer,
+                       unsigned byte_offset,
+                       unsigned length)
+    : IntegralTypedArrayBase<unsigned char>(std::move(buffer),
+                                            byte_offset,
+                                            length) {}
+
+}  // namespace WTF
+
+using WTF::Uint8Array;
+
+#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_TYPED_ARRAYS_UINT8_ARRAY_H_