Only (and always) put URLs in NSLinkAttributeName.

chrome/browser/ui/cocoa/bookmarks/bookmark_sync_promo_controller.mm

 // Copyright 2013 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 "chrome/browser/ui/cocoa/bookmarks/bookmark_sync_promo_controller.h"
 
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/signin/signin_promo.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/chrome_style.h"
@@ skipping 74 matching lines @@
   NSString* nsLinkText = SysUTF16ToNSString(linkText);
   NSFont* font = [NSFont labelFontOfSize:kFontSize];
   NSColor* linkColor = gfx::SkColorToCalibratedNSColor(
       chrome_style::GetLinkColor());
 
   textView_.reset([[HyperlinkTextView alloc] init]);
   [textView_ setMessage:nsPromoText
                withFont:font
            messageColor:gfx::SkColorToDeviceNSColor(kTextColor)];
   [textView_ addLinkRange:NSMakeRange(offset, [nsLinkText length])
-                 withName:@""
+                  withURL:@"about:blank"  // using a link here is bad ui
                 linkColor:linkColor];
   [textView_ setRefusesFirstResponder:YES];
   [[textView_ textContainer] setLineFragmentPadding:0.0];
   RemoveUnderlining(textView_, offset, linkText.size());
   [textView_ setDelegate:self];
 
   [promoView setContentView:textView_];
 
   [self setView:promoView];
 }
 
 - (BOOL)textView:(NSTextView *)textView
    clickedOnLink:(id)link
          atIndex:(NSUInteger)charIndex {
   chrome::ShowBrowserSignin(browser_, signin_metrics::SOURCE_BOOKMARK_BUBBLE);
   return YES;
 }
 
 @end