Roll Observatory packages and add a roll script

packages/dart_style/test/regression/0200/0221.unit

Index: packages/dart_style/test/regression/0200/0221.unit
diff --git a/packages/dart_style/test/regression/0200/0221.unit b/packages/dart_style/test/regression/0200/0221.unit
new file mode 100644
index 0000000000000000000000000000000000000000..a76f236ec714b8de336e1179cce5b1caac2f6a6e
--- /dev/null
+++ b/packages/dart_style/test/regression/0200/0221.unit
@@ -0,0 +1,97 @@
+>>>
+class Foo {
+  static Column column(Handler onSelection) =>
+      (Column.defaultBuilder(videoMsg())
+    ..id = 'VIDEO'
+    ..segment = ((row) => row.segmentedStats
+        .map((s) => s.get(Stats.SEGMENTATION))
+        .toList())
+    ..cell = new Cell(onSelection)).build();
+}
+<<<
+class Foo {
+  static Column column(Handler onSelection) =>
+      (Column.defaultBuilder(videoMsg())
+        ..id = 'VIDEO'
+        ..segment = ((row) =>
+            row.segmentedStats.map((s) => s.get(Stats.SEGMENTATION)).toList())
+        ..cell = new Cell(onSelection)).build();
+}
+>>>
+void _updateChart() {
+  if (_model.settings != null) {
+    _chart.update((ChartSettings.builder()
+      ..ids.addAll(_model.ids)
+      ..statusFilter = StatusFilter.ALL
+      ..dateRange =
+      chartDates.toChartDateRange(_model.settings.dateRange.value)
+      ..segmentationDimension = _model.segmentation
+      ..context = ChartContext.empty).build());
+  }
+}
+<<<
+void _updateChart() {
+  if (_model.settings != null) {
+    _chart.update((ChartSettings.builder()
+      ..ids.addAll(_model.ids)
+      ..statusFilter = StatusFilter.ALL
+      ..dateRange = chartDates.toChartDateRange(_model.settings.dateRange.value)
+      ..segmentationDimension = _model.segmentation
+      ..context = ChartContext.empty).build());
+  }
+}
+>>> (indent 2)
+  void _updateChart() {
+    if (_model.settings != null) {
+      _chart.update((ChartSettings.builder()
+        ..ids.addAll(_model.ids)
+        ..statusFilter = StatusFilter.ALL
+        ..dateRange =
+        chartDates.toChartDateRange(_model.settings.dateRange.value)
+        ..segmentationDimension = _model.segmentation
+        ..context = ChartContext.empty).build());
+    }
+  }
+<<<
+  void _updateChart() {
+    if (_model.settings != null) {
+      _chart.update((ChartSettings.builder()
+        ..ids.addAll(_model.ids)
+        ..statusFilter = StatusFilter.ALL
+        ..dateRange =
+            chartDates.toChartDateRange(_model.settings.dateRange.value)
+        ..segmentationDimension = _model.segmentation
+        ..context = ChartContext.empty).build());
+    }
+  }
+>>>
+trackEvent(String category, String action,
+    {String label: '', int value: 0}) => eventsTracked.add(
+        new AnalyticsEvent()
+  ..category = category
+  ..action = action
+  ..label = label
+  ..value = value);
+<<<
+trackEvent(String category, String action, {String label: '', int value: 0}) =>
+    eventsTracked.add(new AnalyticsEvent()
+      ..category = category
+      ..action = action
+      ..label = label
+      ..value = value);
+>>>
+main() {
+  (new OrderBy()
+        ..field = s.column
+        ..sortOrder =
+        s.isAscending ? OrderBySortOrder.ASCENDING : OrderBySortOrder.DESCENDING)
+          .toList();
+}
+<<<
+main() {
+  (new OrderBy()
+    ..field = s.column
+    ..sortOrder = s.isAscending
+        ? OrderBySortOrder.ASCENDING
+        : OrderBySortOrder.DESCENDING).toList();
+}