SWRegistration::unregister returns false when the registration is already unregistered. (3/3)

LayoutTests/http/tests/serviceworker/unregister.html

Index: LayoutTests/http/tests/serviceworker/unregister.html
diff --git a/LayoutTests/http/tests/serviceworker/unregister.html b/LayoutTests/http/tests/serviceworker/unregister.html
index b9723f46b6b4840ca22499a95b690030d1d0ff6b..d68122fb3d9d3258cda68941bae85ab0d3048806 100644
--- a/LayoutTests/http/tests/serviceworker/unregister.html
+++ b/LayoutTests/http/tests/serviceworker/unregister.html
@@ -28,11 +28,8 @@ async_test(function(t) {
           return registration.unregister();
         })
       .then(function(value) {
-          // FIXME: Uncomment after applied the first patch.
-          // https://codereview.chromium.org/554573002
-          // See: https://crbug.com/390894#c16
-          // assert_equals(value, false,
-          //               'unregistering twice should resolve with false');
+          assert_equals(value, false,
+                        'unregistering twice should resolve with false');
           t.done();
         })
       .catch(unreached_rejection(t));