title: ChartWrapper is not displaying the graph
body: <p>I'm using the google-chart-api to draw a graph using ChartWrapper class and ControlWrapper class. Here is the code I have been using.</p>
  
  <p>This is the function to load hard-coded data.</p>
  
  <pre><code>   function drawVisualization() {
      // Prepare the data
      var data = google.visualization.arrayToDataTable([
        ['TimeLine', 'Time-Option', 'LOC', 'Comments'],
        ['Monthly', '1', 200, 20],
        ['Monthly', '2', 300, 30],
        ['Weekly', '1', 150, 15],
        ['Weekly', '3', 35, 3],
        ['Daily', '1', 230, 23],
        ['Daily', '2', 178, 17],
  
      ]);
  </code></pre>
  
  <p>This is my ControlWrapper.</p>
  
  <pre><code>     var timelinePicker = new google.visualization.ControlWrapper({
        'controlType': 'CategoryFilter',
        'containerId': 'control',
        'options': {
          'filterColumnLabel': 'Timeline',
          'ui': {
            'labelStacking': 'vertical',
            'allowTyping': false,
            'allowMultiple': false
          }
        }
      });
  </code></pre>
  
  <p>And this is my ChartWrapper.</p>
  
  <pre><code>        var lineChart = new google.visualization.ChartWrapper({
          'chartType': 'LineChart',
          'containerId': 'chart',
          'options': {
            'width': 900,
            'height': 500,
            'chartArea': {top: 0, right: 0, bottom: 0}
          },
  
          'view': {'columns': [1, 2]}
        });
  
     new google.visualization.DashBoard(document.getElementById('chart')).bind(timelinePicker, lineChart).draw(data);
  }
      google.setOnLoadCallback(drawVisualization);
  </code></pre>
  
  <p>And to view the graph,</p>
  
  <pre><code>  &lt;body&gt;
    &lt;div id="chart"&gt;
    &lt;table&gt;
      &lt;tr style='vertical-align: top'&gt;
        &lt;td style='width: 300px; font-size: 0.9em;'&gt;
          &lt;div id="control"&gt;&lt;/div&gt;
        &lt;/td&gt;
        &lt;td style='width: 600px'&gt;
          &lt;div style="float: left;" id="chart"&gt;&lt;/div&gt;
        &lt;/td&gt;
      &lt;/tr&gt;
    &lt;/table&gt;
    &lt;/div&gt;
    &lt;/body&gt;
  </code></pre>
  
  <p>But still, I don't get any output. Any idea what has gone wrong here? </p>