Use step_timeout

html/webappapis/animation-frames/callback-exception.html

@@ -45,7 +45,7 @@
       });
 
       // The test passes if no error events have been fired within this time.
-      setTimeout(t.step_func_done(), 10);
+      t.step_timeout(t.step_func_done(), 2000);
     }));
     windowProxy.location.href = "callback-exception-support-2.html";
   });

html/webappapis/scripting/events/event-handler-idl-attribute-realm.html

@@ -57,7 +57,7 @@
       assert_equals(onclick, null, "Attempting to compile a syntax error must give null");
 
       // The test passes if no error events have been fired within this time.
-      setTimeout(t.step_func_done(), 10);
+      t.step_timeout(t.step_func_done(), 2000);
     }));
     windowProxy.location.href = "event-handler-idl-attribute-realm-support-2.html";
   });

html/webappapis/timers/compile-errors.html

@@ -37,7 +37,7 @@
       oldSetTimeout("1 *-* 'syntax error'", 0);
 
       // The test passes if no error events have been fired within this time.
-      setTimeout(t.step_func_done(), 10);
+      t.step_timeout(t.step_func_done(), 2000);
     }));
     windowProxy.location.href = "compile-errors-support-2.html";
   });

workers/Worker_ErrorEvent_after_navigation.htm

@@ -25,9 +25,8 @@
     windowProxy.doWorkerStuffAndExpectNoError(t);
 
     iframe.addEventListener("load", t.step_func(() => {
-
       // The test passes if no error events have been fired within this time.
-      setTimeout(t.step_func_done(), 300);
+      t.step_timeout(t.step_func_done(), 2000);
     }));
     windowProxy.location.href = "Worker_ErrorEvent_after_navigation_support-2.htm";
   }));

workers/support/error-after-some-time.js

@@ -18,5 +18,5 @@ self.onmessage = ev => {
     }
   }
 
-  setTimeout(() => { throw new Error("boo"); }, 100);
+  step_timeout(() => { throw new Error("boo"); }, 100);
 };