ui: Cleanup class/struct forward declarations

ppapi/cpp/var.h

Index: ppapi/cpp/var.h
diff --git a/ppapi/cpp/var.h b/ppapi/cpp/var.h
index 1b2435606a21b80b232805f0583c606046ff7772..7b02b9d202b922540cb30268daa90bf34edbb1e0 100644
--- a/ppapi/cpp/var.h
+++ b/ppapi/cpp/var.h
@@ -315,7 +315,7 @@ class Var {
 
  private:
   // Prevent an arbitrary pointer argument from being implicitly converted to
-  // a bool at Var construction. If somebody makes such a mistake, (s)he will
+  // a bool at Var construction. If somebody makes such a mistake, they will
   // get a compilation error.
   Var(void* non_scriptable_object_pointer);
 };