Only (and always) put URLs in NSLinkAttributeName.

chrome/browser/ui/cocoa/exclusive_access_bubble_window_controller.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/logging.h"  // for NOTREACHED()
 #include "base/mac/bundle_locations.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 226 matching lines @@
   }
 
   NSFont* font = [NSFont
       systemFontOfSize:[NSFont
                            systemFontSizeForControlSize:NSRegularControlSize]];
   [exitLabel_.get() setMessage:exitLinkedText
                       withFont:font
                   messageColor:[NSColor blackColor]];
   if ([exitLinkText length] != 0) {
     [exitLabel_.get() addLinkRange:NSMakeRange(0, [exitLinkText length])
-                          withName:@""
+                           withURL:@"about:blank"  // using link here is bad ui
                          linkColor:[NSColor blueColor]];
   }
   [exitLabel_.get() setAlignment:NSRightTextAlignment];
 
   NSRect labelFrame = [exitLabel_ frame];
 
   // NSTextView's sizeToFit: method seems to enjoy wrapping lines. Temporarily
   // set the size large to force it not to.
   NSRect windowFrame = [[self window] frame];
   [exitLabel_ setFrameSize:windowFrame.size];
@@ skipping 85 matching lines @@
 - (void)hideSoon {
   hideTimer_.reset(
       [[NSTimer scheduledTimerWithTimeInterval:kInitialDelay
                                         target:self
                                       selector:@selector(hideTimerFired:)
                                       userInfo:nil
                                        repeats:NO] retain]);
 }
 
 @end