Refactor more clipboard/bookmark logic.

ui/base/clipboard/clipboard_mac.mm

Index: ui/base/clipboard/clipboard_mac.mm
diff --git a/ui/base/clipboard/clipboard_mac.mm b/ui/base/clipboard/clipboard_mac.mm
index 08a604122fab438152b02d4c6027ba972041d018..20cdb95396d1a5102a446902d200abc7fa114bde 100644
--- a/ui/base/clipboard/clipboard_mac.mm
+++ b/ui/base/clipboard/clipboard_mac.mm
@@ -426,18 +426,7 @@ void ClipboardMac::WriteBookmark(const char* title_data,
   base::scoped_nsobject<NSPasteboardItem> item(
       ClipboardUtil::PasteboardItemFromUrl(url, title));
   NSPasteboard* pb = GetPasteboard();
-
-  NSSet* oldTypes = [NSSet setWithArray:[pb types]];
-  NSMutableSet* newTypes = [NSMutableSet setWithArray:[item types]];
-  [newTypes minusSet:oldTypes];
-
-  [pb addTypes:[newTypes allObjects] owner:nil];
-  for (NSString* type in newTypes) {
-    // Technically, the object associated with |type| might be an NSString or a
-    // property list. It doesn't matter though, since the type gets pulled from
-    // and shoved into an NSDictionary.
-    [pb setData:[item dataForType:type] forType:type];
-  }
+  ui::ClipboardUtil::AddDataToPasteboard(pb, item);
 }
 
 void ClipboardMac::WriteBitmap(const SkBitmap& bitmap) {