Change target+selector for block in InfoBarView

ios/chrome/browser/ui/infobars/infobar_view.h

Index: ios/chrome/browser/ui/infobars/infobar_view.h
diff --git a/ios/chrome/browser/ui/infobars/infobar_view.h b/ios/chrome/browser/ui/infobars/infobar_view.h
index 1dca2431e89ad9d5a0b8bfff37e1ab296dbad427..d54d0815ddab10da371c9269d827df8ea592d4e6 100644
--- a/ios/chrome/browser/ui/infobars/infobar_view.h
+++ b/ios/chrome/browser/ui/infobars/infobar_view.h
@@ -51,8 +51,8 @@ class InfoBarViewDelegate;
 - (void)addLabel:(NSString*)label;
 
 // Adds a message to the infobar that optionaly contains links initialized with
-// |stringAsLink:|. |action| is called on |target| when a link is clicked.
-- (void)addLabel:(NSString*)label target:(id)target action:(SEL)action;
+// |stringAsLink:|. |action| is called when a link is clicked.

[jif, 2017/04/21 11:12:48]

Can you explain what NSUInteger is? For example:

|action| is called when a link is clicked, with the tag associated with the link
passed as a parameter.

[gambard, 2017/04/21 11:34:05]

Done.

+- (void)addLabel:(NSString*)label action:(void (^)(NSUInteger))action;
 
 // Adds two buttons to the infobar. Button1 is the primary action of the infobar
 // and in Material Design mode is shown with bold colors to reflect this role.