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diff --git a/Source/JavaScriptCore/wtf/CurrentTime.h b/Source/JavaScriptCore/wtf/CurrentTime.h
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+/*
+ * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
+ * Copyright (C) 2008 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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 THE COPYRIGHT
+ * OWNER 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 CurrentTime_h
+#define CurrentTime_h
+
+#include <time.h>
+
+namespace WTF {
+
+// Returns the current UTC time in seconds, counted from January 1, 1970.
+// Precision varies depending on platform but is usually as good or better
+// than a millisecond.
+double currentTime();
+
+// Same thing, in milliseconds.
+inline double currentTimeMS()
+{
+    return currentTime() * 1000.0;
+}
+
+inline void getLocalTime(const time_t* localTime, struct tm* localTM)
+{
+#if COMPILER(MSVC7_OR_LOWER) || COMPILER(MINGW) || OS(WINCE)
+    *localTM = *localtime(localTime);
+#elif COMPILER(MSVC)
+    localtime_s(localTM, localTime);
+#else
+    localtime_r(localTime, localTM);
+#endif
+}
+
+// Provides a monotonically increasing time in seconds since an arbitrary point in the past.
+// On unsupported platforms, this function only guarantees the result will be non-decreasing.
+double monotonicallyIncreasingTime();
+
+} // namespace WTF
+
+using WTF::currentTime;
+using WTF::currentTimeMS;
+using WTF::getLocalTime;
+using WTF::monotonicallyIncreasingTime;
+
+#endif // CurrentTime_h