diff -r 000000000000 -r 4f2f89ce4247 WebKit/mac/Misc/WebNSArrayExtras.m
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/mac/Misc/WebNSArrayExtras.m	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2007 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. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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.
+ */
+
+#import "WebNSArrayExtras.h"
+
+#import <wtf/Assertions.h>
+
+@implementation NSArray (WebNSArrayExtras)
+
+-(NSNumber *)_webkit_numberAtIndex:(NSUInteger)index
+{
+    id object = [self objectAtIndex:index];
+    return [object isKindOfClass:[NSNumber class]] ? object : nil;
+}
+
+-(NSString *)_webkit_stringAtIndex:(NSUInteger)index
+{
+    id object = [self objectAtIndex:index];
+    return [object isKindOfClass:[NSString class]] ? object : nil;
+}
+
+@end
+
+@implementation NSMutableArray (WebNSArrayExtras)
+
+- (void)_webkit_removeUselessMenuItemSeparators
+{
+    // Starting with a mutable array of NSMenuItems, removes any separators at the start,
+    // removes any separators at the end, and collapses any other adjacent separators to
+    // a single separator.
+
+    int index;
+    // Start this with YES so very last item will be removed if it's a separator.
+    BOOL removePreviousItemIfSeparator = YES;
+    for (index = [self count] - 1; index >= 0; --index) {
+        NSMenuItem *item = [self objectAtIndex:index];
+        ASSERT([item isKindOfClass:[NSMenuItem class]]);
+        BOOL itemIsSeparator = [item isSeparatorItem];
+        if (itemIsSeparator && (removePreviousItemIfSeparator || index == 0))
+            [self removeObjectAtIndex:index];
+        removePreviousItemIfSeparator = itemIsSeparator;
+    }
+    
+    // This could leave us with one initial separator; kill it off too
+    if ([self count] && [[self objectAtIndex:0] isSeparatorItem])
+        [self removeObjectAtIndex:0];
+}
+
+@end