Revert of [Battery] Allow usage from SecureContext or top-level browsing context only.

third_party/WebKit/LayoutTests/battery-status/detached-no-crash.html

Index: third_party/WebKit/LayoutTests/battery-status/detached-no-crash.html
diff --git a/third_party/WebKit/LayoutTests/battery-status/detached-no-crash.html b/third_party/WebKit/LayoutTests/battery-status/detached-no-crash.html
index 58cbb5de86dd2917d9bac478527b387725c9605f..3caf6e0543c46182c722c6e673fdf3b1c34aa7ae 100644
--- a/third_party/WebKit/LayoutTests/battery-status/detached-no-crash.html
+++ b/third_party/WebKit/LayoutTests/battery-status/detached-no-crash.html
@@ -18,15 +18,8 @@
         w.close();
         w = null;
     } else if (event.data == "closed") {
-      nav.getBattery().then(battery => {
-        assert_unreachable('getBattery should reject on a closed window');
-      })
-      .catch(error => {
-        // DOMException.SECURITY_ERR = 18.
-        debug('Error Code is ' + error.code);
-        assert_equals(error.code, DOMException.SECURITY_ERR);
-      });
-      setTimeout(finishJSTest, 0);
+        shouldBeUndefined("nav.getBattery()");
+        finishJSTest();
     }
 }