Stop showing snackbar with success message when sharing with Chrome iOS.

ios/chrome/browser/ui/activity_services/share_protocol.h

Index: ios/chrome/browser/ui/activity_services/share_protocol.h
diff --git a/ios/chrome/browser/ui/activity_services/share_protocol.h b/ios/chrome/browser/ui/activity_services/share_protocol.h
index dc88815abe9073e285ef3c92efbd74002c151d1b..b135248e22da6aa862aa637fff5d7039f57668b4 100644
--- a/ios/chrome/browser/ui/activity_services/share_protocol.h
+++ b/ios/chrome/browser/ui/activity_services/share_protocol.h
@@ -32,21 +32,21 @@ enum ShareResult {
 
 // This protocol provides callbacks for sharing events.
 @protocol ShareToDelegate<NSObject>
-// Callback triggered on completion of sharing. |successMessage| gives the
-// message to be displayed on successful completion. If |successMessage| is nil,
-// no message is displayed.
+// Callback triggered on completion of sharing. |completionMessage| gives the
+// message to be displayed on completion. If |completionMessage| is nil, no
+// message is displayed.
 - (void)shareDidComplete:(ShareTo::ShareResult)shareStatus
-          successMessage:(NSString*)message;
+       completionMessage:(NSString*)message;
 
 // Callback triggered if user invoked a Password Management App Extension.
 // If |shareStatus| is a successful status, delegate implementing this method
 // should find a login form on the current page and autofills it with the
-// |username| and |password|. |successMessage|, if non-nil, is the message to
-// be displayed on successful completion.
+// |username| and |password|. |completionMessage|, if non-nil, is the message to
+// be displayed on completion.
 - (void)passwordAppExDidFinish:(ShareTo::ShareResult)shareStatus
                       username:(NSString*)username
                       password:(NSString*)password
-                successMessage:(NSString*)message;
+             completionMessage:(NSString*)message;
 @end
 
 namespace ios {