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diff --git a/Source/WebCore/bridge/jni/JavaType.h b/Source/WebCore/bridge/jni/JavaType.h
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+/*
+ * Copyright (C) 2003, 2004, 2005, 2008, 2009, 2010 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.
+ * 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 JavaType_h
+#define JavaType_h
+
+#if ENABLE(JAVA_BRIDGE)
+
+namespace JSC {
+
+namespace Bindings {
+
+// The order of these items can not be modified as they are tightly
+// bound with the JVM on Mac OSX. If new types need to be added, they
+// should be added to the end. It is used in jni_obc.mm when calling
+// through to the JVM. Newly added items need to be made compatible
+// in that file.
+//
+// The type conversion logic used here needs improving and this enum will likely
+// be changed at that time. See https://bugs.webkit.org/show_bug.cgi?id=38745
+enum JavaType {
+    JavaTypeInvalid = 0,
+    JavaTypeVoid,
+    JavaTypeObject,
+    JavaTypeBoolean,
+    JavaTypeByte,
+    JavaTypeChar,
+    JavaTypeShort,
+    JavaTypeInt,
+    JavaTypeLong,
+    JavaTypeFloat,
+    JavaTypeDouble,
+    JavaTypeArray,
+#if USE(V8)
+    // JavaTypeString is distinct from JavaTypeObject because strings receive
+    // special handling when we convert to and from JavaScript. When calling
+    // Java methods, we must create Java String objects for string arguments.
+    // However, at conversion time we cannot assume that the mechanism used to
+    // interact with Java is JNI. Instead we use a special JavaTypeString.
+    // Implementations of JavaInstance which use JNI will create a Java String
+    // object when converting the JavaValue to a jvalue.
+    //
+    // Note that this type is independent of the JavaScript engine, but is
+    // currently used only with V8.
+    // See https://bugs.webkit.org/show_bug.cgi?id=57023.
+    JavaTypeString,
+#endif
+};
+
+} // namespace Bindings
+
+} // namespace JSC
+
+#endif // ENABLE(JAVA_BRIDGE)
+
+#endif // JavaType_h