Expose SerializedScriptValue data through a non-copying view.

third_party/WebKit/Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple 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.
@@ skipping 2658 matching lines @@
 
 bool Internals::cursorUpdatePending() const {
   if (!GetFrame())
     return false;
 
   return GetFrame()->GetEventHandler().CursorUpdatePending();
 }
 
 DOMArrayBuffer* Internals::serializeObject(
     PassRefPtr<SerializedScriptValue> value) const {
-  String string_value = value->ToWireString();
-  DOMArrayBuffer* buffer = DOMArrayBuffer::CreateUninitializedOrNull(
-      string_value.length(), sizeof(UChar));
-  if (buffer) {
-    string_value.CopyTo(static_cast<UChar*>(buffer->Data()), 0,
-                        string_value.length());
-  }
+  StringView view = value->GetWireData();
+  DCHECK(view.Is8Bit());
+  DOMArrayBuffer* buffer =
+      DOMArrayBuffer::CreateUninitializedOrNull(view.length(), sizeof(LChar));
+  if (buffer)
+    memcpy(buffer->Data(), view.Characters8(), view.length());
   return buffer;
 }
 
 PassRefPtr<SerializedScriptValue> Internals::deserializeBuffer(
     DOMArrayBuffer* buffer) const {
   String value(static_cast<const UChar*>(buffer->Data()),
                buffer->ByteLength() / sizeof(UChar));
   return SerializedScriptValue::Create(value);
 }
 
@@ skipping 583 matching lines @@
 
 void Internals::crash() {
   CHECK(false) << "Intentional crash";
 }
 
 void Internals::setIsLowEndDevice(bool is_low_end_device) {
   MemoryCoordinator::SetIsLowEndDeviceForTesting(is_low_end_device);
 }
 
 }  // namespace blink