[ObjC ARC] Converts ios/chrome/browser/ui/util:util to ARC.

ios/chrome/browser/ui/util/label_link_controller.h

Index: ios/chrome/browser/ui/util/label_link_controller.h
diff --git a/ios/chrome/browser/ui/util/label_link_controller.h b/ios/chrome/browser/ui/util/label_link_controller.h
index 2fab7535283c01bbdad3efd6b7834faa279b7912..e1bed542baff65ae6405598e563d0b6dd1d222ec 100644
--- a/ios/chrome/browser/ui/util/label_link_controller.h
+++ b/ios/chrome/browser/ui/util/label_link_controller.h
@@ -35,7 +35,7 @@ class GURL;
 
 // Sets the link color for any defined links, updating the controlled label's
 // attributed text accordingly.
-@property(nonatomic, assign) UIColor* linkColor;
+@property(nonatomic, copy) UIColor* linkColor;
 
 // Sets the link underline style for any defined links, updating the controlled
 // label's attributed text accordingly.
@@ -43,7 +43,7 @@ class GURL;
 
 // Sets the link font for any defined links, updating the controlled label's
 // attributed text accordingly.
-@property(nonatomic, retain) UIFont* linkFont;
+@property(nonatomic, strong) UIFont* linkFont;
 
 // Creates a new controller for |label|, keeping a strong reference. |action| is
 // the block called for any tapped link.