Format all files under the sdk/lib directory.

sdk/lib/async/stream_impl.dart

Index: sdk/lib/async/stream_impl.dart
diff --git a/sdk/lib/async/stream_impl.dart b/sdk/lib/async/stream_impl.dart
index 9ae7342d65038f9e12ebb3be3f50742d8e0dfa18..1dd229ff5c54eba47412b2436fb04d53a376e79f 100644
--- a/sdk/lib/async/stream_impl.dart
+++ b/sdk/lib/async/stream_impl.dart
@@ -500,7 +500,8 @@ class _GeneratedStreamImpl<T> extends _StreamImpl<T> {
     if (_isUsed) throw new StateError("Stream has already been listened to.");
     _isUsed = true;
     return new _BufferingStreamSubscription<T>(
-        onData, onError, onDone, cancelOnError).._setPendingEvents(_pending());
+        onData, onError, onDone, cancelOnError)
+      .._setPendingEvents(_pending());
   }
 }