Switch tabs from VR shell.

chrome/browser/resources/vr_shell/vr_shell_ui.js

Index: chrome/browser/resources/vr_shell/vr_shell_ui.js
diff --git a/chrome/browser/resources/vr_shell/vr_shell_ui.js b/chrome/browser/resources/vr_shell/vr_shell_ui.js
index af3c27f8d38a3e39f8ed75053d11bbd42e64b298..d0082161a09b61aa6363955f026b8212fe441f38 100644
--- a/chrome/browser/resources/vr_shell/vr_shell_ui.js
+++ b/chrome/browser/resources/vr_shell/vr_shell_ui.js
@@ -726,6 +726,10 @@ var vrShellUi = (function() {
       // view.
       let domTab = this.domTabTemplate.cloneNode(true);
       domTab.removeAttribute('id');
+      domTab.addEventListener('click', function() {
+        api.doAction(api.Action.SHOW_TAB, {'id': domTab.tab.id});
+      });
+      domTab.tab = tab;
       this.domTabClip.appendChild(domTab);
       this.domTabs[this.getQualifiedTabId(tab)] = domTab;
       return domTab;