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diff --git a/WebCore/bridge/jni/JNIUtility.h b/WebCore/bridge/jni/JNIUtility.h
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+++ b/WebCore/bridge/jni/JNIUtility.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 JNIUtility_h
+#define JNIUtility_h
+
+#if ENABLE(MAC_JAVA_BRIDGE)
+
+#include <JavaVM/jni.h>
+
+// 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.
+typedef enum {
+    invalid_type = 0,
+    void_type,
+    object_type,
+    boolean_type,
+    byte_type,
+    char_type,
+    short_type,
+    int_type,
+    long_type,
+    float_type,
+    double_type,
+    array_type
+} JNIType;
+
+namespace JSC {
+
+namespace Bindings {
+
+class JavaParameter;
+
+const char* getCharactersFromJString(jstring);
+void releaseCharactersForJString(jstring, const char*);
+
+const char* getCharactersFromJStringInEnv(JNIEnv*, jstring);
+void releaseCharactersForJStringInEnv(JNIEnv*, jstring, const char*);
+const jchar* getUCharactersFromJStringInEnv(JNIEnv*, jstring);
+void releaseUCharactersForJStringInEnv(JNIEnv*, jstring, const jchar*);
+
+JNIType JNITypeFromClassName(const char* name);
+JNIType JNITypeFromPrimitiveType(char type);
+const char* signatureFromPrimitiveType(JNIType);
+
+jvalue getJNIField(jobject, JNIType, const char* name, const char* signature);
+
+jmethodID getMethodID(jobject, const char* name, const char* sig);
+JNIEnv* getJNIEnv();
+JavaVM* getJavaVM();
+void setJavaVM(JavaVM*);
+
+
+template <typename T> struct JNICaller;
+
+template<> struct JNICaller<void> {
+    static void callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallVoidMethodA(obj, mid, args);
+    }
+    static void callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallVoidMethodV(obj, mid, args);
+    }
+};
+
+template<> struct JNICaller<jobject> {
+    static jobject callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallObjectMethodA(obj, mid, args);
+    }
+    static jobject callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallObjectMethodV(obj, mid, args);
+    }
+};
+
+template<> struct JNICaller<jboolean> {
+    static jboolean callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallBooleanMethodA(obj, mid, args);
+    }
+    static jboolean callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallBooleanMethodV(obj, mid, args);
+    }
+    static jboolean callStaticV(jclass cls, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallStaticBooleanMethod(cls, mid, args);
+    }
+};
+
+template<> struct JNICaller<jbyte> {
+    static jbyte callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallByteMethodA(obj, mid, args);
+    }
+    static jbyte callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallByteMethodV(obj, mid, args);
+    }
+};
+
+template<> struct JNICaller<jchar> {
+    static jchar callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallCharMethodA(obj, mid, args);
+    }
+    static jchar callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallCharMethodV(obj, mid, args);
+    }
+};
+
+template<> struct JNICaller<jshort> {
+    static jshort callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallShortMethodA(obj, mid, args);
+    }
+    static jshort callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallShortMethodV(obj, mid, args);
+    }
+};
+
+template<> struct JNICaller<jint> {
+    static jint callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallIntMethodA(obj, mid, args);
+    }
+    static jint callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallIntMethodV(obj, mid, args);
+    }
+};
+
+template<> struct JNICaller<jlong> {
+    static jlong callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallLongMethodA(obj, mid, args);
+    }
+    static jlong callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallLongMethodV(obj, mid, args);
+    }
+};
+
+template<> struct JNICaller<jfloat> {
+    static jfloat callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallFloatMethodA(obj, mid, args);
+    }
+    static jfloat callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallFloatMethodV(obj, mid, args);
+    }
+};
+
+template<> struct JNICaller<jdouble> {
+    static jdouble callA(jobject obj, jmethodID mid, jvalue* args)
+    {
+        return getJNIEnv()->CallDoubleMethodA(obj, mid, args);
+    }
+    static jdouble callV(jobject obj, jmethodID mid, va_list args)
+    {
+        return getJNIEnv()->CallDoubleMethodV(obj, mid, args);
+    }
+};
+
+template<typename T> T callJNIMethodIDA(jobject obj, jmethodID mid, jvalue *args)
+{
+    return JNICaller<T>::callA(obj, mid, args);
+}
+
+template<typename T>
+static T callJNIMethodV(jobject obj, const char* name, const char* sig, va_list args)
+{
+    JavaVM* jvm = getJavaVM();
+    JNIEnv* env = getJNIEnv();
+
+    if (obj && jvm && env) {
+        jclass cls = env->GetObjectClass(obj);
+        if (cls) {
+            jmethodID mid = env->GetMethodID(cls, name, sig);
+            if (mid) {
+                // Avoids references to cls without popping the local frame.
+                env->DeleteLocalRef(cls);
+                return JNICaller<T>::callV(obj, mid, args);
+            }
+            fprintf(stderr, "%s: Could not find method: %s for %p\n", __PRETTY_FUNCTION__, name, obj);
+            env->ExceptionDescribe();
+            env->ExceptionClear();
+            fprintf(stderr, "\n");
+
+            env->DeleteLocalRef(cls);
+        } else
+            fprintf(stderr, "%s: Could not find class for %p\n", __PRETTY_FUNCTION__, obj);
+    }
+
+    return 0;
+}
+
+template<typename T>
+T callJNIMethod(jobject obj, const char* methodName, const char* methodSignature, ...)
+{
+    va_list args;
+    va_start(args, methodSignature);
+
+    T result = callJNIMethodV<T>(obj, methodName, methodSignature, args);
+
+    va_end(args);
+
+    return result;
+}
+
+template<typename T>
+T callJNIStaticMethod(jclass cls, const char* methodName, const char* methodSignature, ...)
+{
+    JavaVM* jvm = getJavaVM();
+    JNIEnv* env = getJNIEnv();
+    va_list args;
+
+    va_start(args, methodSignature);
+
+    T result = 0;
+
+    if (cls && jvm && env) {
+        jmethodID mid = env->GetStaticMethodID(cls, methodName, methodSignature);
+        if (mid)
+            result = JNICaller<T>::callStaticV(cls, mid, args);
+        else {
+            fprintf(stderr, "%s: Could not find method: %s for %p\n", __PRETTY_FUNCTION__, methodName, cls);
+            env->ExceptionDescribe();
+            env->ExceptionClear();
+            fprintf(stderr, "\n");
+        }
+    }
+
+    va_end(args);
+
+    return result;
+}
+
+} // namespace Bindings
+
+} // namespace JSC
+
+#endif // ENABLE(MAC_JAVA_BRIDGE)
+
+#endif // JNIUtility_h