Add a button to chart-title to populate the test-picker.

dashboard/dashboard/elements/report-page.html

Index: dashboard/dashboard/elements/report-page.html
diff --git a/dashboard/dashboard/elements/report-page.html b/dashboard/dashboard/elements/report-page.html
index f32edfa3898133768889b357fd82eb4e7fdb635f..f9cbdcef0b468e3d14751277942d4fe83230099c 100644
--- a/dashboard/dashboard/elements/report-page.html
+++ b/dashboard/dashboard/elements/report-page.html
@@ -41,8 +41,12 @@ found in the LICENSE file.
   <script>
     'use strict';
     Polymer({
-
       is: 'report-page',
+
+      listeners: {
+        populateTestPicker: 'populateTestPicker_',
+      },
+
       properties: {
         charts: {
           type: Array,
@@ -121,6 +125,11 @@ found in the LICENSE file.
         this.uriController.load();
       },
 
+      async populateTestPicker_(event) {
+        this.testPicker.scrollIntoViewIfNeeded();
+        await this.testPicker.setCurrentSelectedPath(event.detail.testPath);
+      },
+
       /**
        * On 'uriload' event, adds charts from the current query parameters.
        * @param {Object} event Event object.