Run dartfmt on all files under runtime.

runtime/observatory/tests/observatory_ui/inbound_references/element_test.dart

Index: runtime/observatory/tests/observatory_ui/inbound_references/element_test.dart
diff --git a/runtime/observatory/tests/observatory_ui/inbound_references/element_test.dart b/runtime/observatory/tests/observatory_ui/inbound_references/element_test.dart
index 324d5e56ded168a38c427f58c6ced09ba9d390cc..0e80f1ce8bed3d65c58d5ec182c2c9d21eb4a81f 100644
--- a/runtime/observatory/tests/observatory_ui/inbound_references/element_test.dart
+++ b/runtime/observatory/tests/observatory_ui/inbound_references/element_test.dart
@@ -21,29 +21,27 @@ main() {
   final inbounds = new InboundReferencesRepositoryMock();
   final instances = new InstanceRepositoryMock();
   test('instantiation', () {
-    final e = new InboundReferencesElement(isolate, object, inbounds,
-                                           instances);
+    final e =
+        new InboundReferencesElement(isolate, object, inbounds, instances);
     expect(e, isNotNull, reason: 'element correctly created');
     expect(e.isolate, equals(isolate));
     expect(e.object, equals(object));
   });
   test('elements created after attachment', () async {
     const source = const InstanceRefMock(id: 'source-id', name: 'source_name');
-    const references = const InboundReferencesMock(elements: const [
-      const InboundReferenceMock(source: source)
-    ]);
+    const references = const InboundReferencesMock(
+        elements: const [const InboundReferenceMock(source: source)]);
     bool invoked = false;
     final inbounds = new InboundReferencesRepositoryMock(
-      getter: expectAsync((i, id) async {
-        expect(i, equals(isolate));
-        expect(id, equals(object.id));
-        invoked = true;
-        return references;
-      }, count: 1)
-    );
+        getter: expectAsync((i, id) async {
+      expect(i, equals(isolate));
+      expect(id, equals(object.id));
+      invoked = true;
+      return references;
+    }, count: 1));
     final instances = new InstanceRepositoryMock();
-    final e = new InboundReferencesElement(isolate, object, inbounds,
-                                           instances);
+    final e =
+        new InboundReferencesElement(isolate, object, inbounds, instances);
     document.body.append(e);
     await e.onRendered.first;
     expect(invoked, isFalse);