Mac: Replace uses of deprecated NSNoUnderlineStyle and NSSingleUnderlineStyle

ui/app_list/cocoa/app_list_view_controller.mm

Index: ui/app_list/cocoa/app_list_view_controller.mm
diff --git a/ui/app_list/cocoa/app_list_view_controller.mm b/ui/app_list/cocoa/app_list_view_controller.mm
index 568acc72a08b53408e9fa48fc1839271607baa86..a05c6c00b1ae5d7de7f9c145bdfe3874b443b159 100644
--- a/ui/app_list/cocoa/app_list_view_controller.mm
+++ b/ui/app_list/cocoa/app_list_view_controller.mm
@@ -288,7 +288,7 @@ void AppListModelObserverBridge::OnShutdown() {
           initWithString:base::SysUTF16ToNSString(messagePost)
               attributes:defaultAttributes]);
 
-  // NSNoUnderlineStyle is broken.
+  // NSUnderlineStyleNone is broken.
   base::scoped_nsobject<NSAttributedString> learnMoreString(
       [[NSAttributedString alloc]
           initWithString:base::SysUTF16ToNSString(learnMore)
@@ -298,7 +298,7 @@ void AppListModelObserverBridge::OnShutdown() {
                 NSLinkAttributeName : linkURL,
                 NSBaselineOffsetAttributeName : baselineOffset,
                 NSUnderlineStyleAttributeName :
-                    [NSNumber numberWithInt:NSNoUnderlineStyle]
+                    [NSNumber numberWithInt:NSUnderlineStyleNone]
               }]);
   base::scoped_nsobject<NSAttributedString> shortcutStringText(
       [[NSAttributedString alloc]