Roll Observatory deps (charted -> ^0.3.0)

packages/dart_style/test/regression/0400/0466.unit

Index: packages/dart_style/test/regression/0400/0466.unit
diff --git a/packages/dart_style/test/regression/0400/0466.unit b/packages/dart_style/test/regression/0400/0466.unit
new file mode 100644
index 0000000000000000000000000000000000000000..aa7a8047fbea36b7c956d9130ed36944e16f9dca
--- /dev/null
+++ b/packages/dart_style/test/regression/0400/0466.unit
@@ -0,0 +1,17 @@
+>>> (indent 4)
+    Future get identifier________ async {
+      var id = identifier________.identifier__;
+
+      return identifier_____________[
+          id] ??= await identifier_______.identifier____________________(
+          identifier___________________________.create()..identifier____ = id);
+    }
+<<<
+    Future get identifier________ async {
+      var id = identifier________.identifier__;
+
+      return identifier_____________[id] ??=
+          await identifier_______.identifier____________________(
+              identifier___________________________.create()
+                ..identifier____ = id);
+    }