[iOS Clean] Ignore compiler warnings for |-performSelector:withObject:|.

ios/clean/chrome/browser/ui/context_menu/context_menu_view_controller.mm

Index: ios/clean/chrome/browser/ui/context_menu/context_menu_view_controller.mm
diff --git a/ios/clean/chrome/browser/ui/context_menu/context_menu_view_controller.mm b/ios/clean/chrome/browser/ui/context_menu/context_menu_view_controller.mm
index d1d120a79866e35e1cdf9bcc43c2e2170db9c7f7..c0f282e11961bd320d93c3a32e8e781c9d004b11 100644
--- a/ios/clean/chrome/browser/ui/context_menu/context_menu_view_controller.mm
+++ b/ios/clean/chrome/browser/ui/context_menu/context_menu_view_controller.mm
@@ -20,11 +20,12 @@ void DispatchContextMenuCommands(const std::vector<SEL>& commands,
                                  ContextMenuContext* context) {
   DCHECK(dispatcher);
   DCHECK(context);
+#pragma clang diagnostic push

[marq (ping after 24h), 2017/06/02 08:28:35]

Please add a comment explaining why this is needed.

[kkhorimoto, 2017/06/02 21:17:35]

Done.

+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
   for (SEL command : commands) {
-    IMP command_imp = [dispatcher methodForSelector:command];
-    DCHECK(command_imp);
-    command_imp(dispatcher, command, context);
+    [dispatcher performSelector:command withObject:context];
   }
+#pragma clang diagnostic pop
 }
 }