Roll Observatory deps (charted -> ^0.3.0)

packages/charted/lib/charts/chart_legend.dart

 //
 // Copyright 2014 Google Inc. All rights reserved.
 //
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file or at
 // https://developers.google.com/open-source/licenses/bsd
 //
 
 part of charted.charts;
 
 ///
 /// Interface that is implemented by classes that support
 /// displaying legend.
 ///
 abstract class ChartLegend {
   /// Title of the legend, dynamically updates the legend title when set.
   String title;
 
   /// Called by [ChartArea] to notify changes to legend.
   update(Iterable<ChartLegendItem> legend, ChartArea chart);
 
   /// Called by [ChartArea] to dispose selection listeners.
   dispose();
 
   /// Factory to create an instance of the default implementation.
   factory ChartLegend(Element host,
-      {maxItems: 0, title: '', showValues: false}) =>
-          new DefaultChartLegendImpl(host, maxItems, showValues, title);
+          {maxItems: 0, title: '', showValues: false}) =>
+      new DefaultChartLegendImpl(host, maxItems, showValues, title);
 }
 
 ///
 /// Class representing an item in the legend.
 ///
 class ChartLegendItem {
   /// Index of the row/column in [ChartData]. Legend uses column based coloring
   /// in [CartesianArea] that has useRowColoring set to false and row based
   /// coloring in all other cases.
   int index;
 
   /// HTML color used for the row/column in chart
   String color;
 
   /// The label of the item.
   String label;
 
   /// Description of the item.
   String description;
 
   /// Pre-formatted value to use as value.
   String value;
 
   /// List of series that this column is part of
   Iterable<ChartSeries> series;
 
-  ChartLegendItem({this.index, this.color,
-      this.label, this.description, this.series, this.value});
+  ChartLegendItem(
+      {this.index,
+      this.color,
+      this.label,
+      this.description,
+      this.series,
+      this.value});
 }