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diff --git a/WebKit/mac/WebCoreSupport/WebSecurityOrigin.mm b/WebKit/mac/WebCoreSupport/WebSecurityOrigin.mm
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+++ b/WebKit/mac/WebCoreSupport/WebSecurityOrigin.mm
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+/*
+ * Copyright (C) 2007, 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.
+ * 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 "WebSecurityOriginInternal.h"
+
+#import <WebCore/KURL.h>
+#import <WebCore/SecurityOrigin.h>
+#import <WebCore/DatabaseTracker.h>
+
+using namespace WebCore;
+
+@implementation WebSecurityOrigin
+- (id)initWithURL:(NSURL *)url
+{
+    self = [super init];
+    if (!self)
+        return nil;
+
+    RefPtr<SecurityOrigin> origin = SecurityOrigin::create(KURL([url absoluteURL]));
+    origin->ref();
+    _private = reinterpret_cast<WebSecurityOriginPrivate*>(origin.get());
+
+    return self;
+}
+
+- (NSString*)protocol
+{
+    return reinterpret_cast<SecurityOrigin*>(_private)->protocol();
+}
+
+- (NSString*)host
+{
+    return reinterpret_cast<SecurityOrigin*>(_private)->host();
+}
+
+// Deprecated. Use host instead. This needs to stay here until we ship a new Safari.
+- (NSString*)domain
+{
+    return [self host];
+}
+
+- (unsigned short)port
+{
+    return reinterpret_cast<SecurityOrigin*>(_private)->port();
+}
+
+// FIXME: https://bugs.webkit.org/show_bug.cgi?id=40627
+// Proper steps should be taken to have subclass implementations of SecurityOrigin's
+// origin, quota, and setQuota methods.
+
+- (unsigned long long)usage
+{
+#if ENABLE(DATABASE)
+    return DatabaseTracker::tracker().usageForOrigin(reinterpret_cast<SecurityOrigin*>(_private));
+#else
+    return 0;
+#endif
+}
+
+- (unsigned long long)quota
+{
+#if ENABLE(DATABASE)
+    return DatabaseTracker::tracker().quotaForOrigin(reinterpret_cast<SecurityOrigin*>(_private));
+#else
+    return 0;
+#endif
+}
+
+// If the quota is set to a value lower than the current usage, that quota will
+// "stick" but no data will be purged to meet the new quota. This will simply
+// prevent new data from being added to databases in that origin
+- (void)setQuota:(unsigned long long)quota
+{
+#if ENABLE(DATABASE)
+    DatabaseTracker::tracker().setQuota(reinterpret_cast<SecurityOrigin*>(_private), quota);
+#endif
+}
+
+- (BOOL)isEqual:(id)anObject
+{
+    if (![anObject isMemberOfClass:[WebSecurityOrigin class]]) {
+        return NO;
+    }
+    
+    return [self _core]->equal([anObject _core]);
+}
+
+- (void)dealloc
+{
+    if (_private)
+        reinterpret_cast<SecurityOrigin*>(_private)->deref();
+    [super dealloc];
+}
+
+- (void)finalize
+{
+    if (_private)
+        reinterpret_cast<SecurityOrigin*>(_private)->deref();
+    [super finalize];
+}
+
+@end
+
+@implementation WebSecurityOrigin (WebInternal)
+
+- (id)_initWithWebCoreSecurityOrigin:(SecurityOrigin*)origin
+{
+    ASSERT(origin);
+    self = [super init];
+    if (!self)
+        return nil;
+
+    origin->ref();
+    _private = reinterpret_cast<WebSecurityOriginPrivate*>(origin);
+
+    return self;
+}
+
+- (SecurityOrigin *)_core
+{
+    return reinterpret_cast<SecurityOrigin*>(_private);
+}
+
+@end