Expose the chromium waterfall in sheriff-o-matic.

Tools/GardeningServer/ui/ct-results-panel.html

Index: Tools/GardeningServer/ui/ct-results-panel.html
diff --git a/Tools/GardeningServer/ui/ct-results-panel.html b/Tools/GardeningServer/ui/ct-results-panel.html
index bd28525bed0691cd6023a99f32d3de44ed41424f..fcbe59387f3af0381b2db90b3b908ac32dfad3aa 100644
--- a/Tools/GardeningServer/ui/ct-results-panel.html
+++ b/Tools/GardeningServer/ui/ct-results-panel.html
@@ -9,7 +9,7 @@ found in the LICENSE file.
 <link rel="import" href="ct-results-by-builder.html">
 <link rel="import" href="ct-embedded-flakiness-dashboard.html">
 
-<polymer-element name="ct-results-panel" attributes="failures">
+<polymer-element name="ct-results-panel" attributes="failures tree">
   <template>
     <style>
       :host {
@@ -57,7 +57,7 @@ found in the LICENSE file.
       </core-menu>
       <div class="results">
         <template if="{{ failures[selected].testName }}">
-          <ct-embedded-flakiness-dashboard test="{{ failures[selected] }}"></ct-embedded-flakiness-dashboard>
+          <ct-embedded-flakiness-dashboard test="{{ failures[selected] }}" tree="{{ tree }}"></ct-embedded-flakiness-dashboard>
         </template>
         <ct-results-by-builder failure="{{ failures[selected] }}"></ct-results-by-builder>
       </div>
@@ -67,6 +67,7 @@ found in the LICENSE file.
     Polymer({
       failures: [],
       selected: 0,
+      tree: '',
 
       failuresChanged: function() {
         this.selected = 0;