SheriffOMatic: Add ct-popout-iframe and switch test output iframes to use it.

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 eb16e0fbab815d7afb6947d2f259586f549c08bf..015938292188dd5cab9445fa8148707a485b80c2 100644
--- a/Tools/GardeningServer/ui/ct-results-panel.html
+++ b/Tools/GardeningServer/ui/ct-results-panel.html
@@ -7,6 +7,7 @@ found in the LICENSE file.
 <link rel="import" href="../bower_components/core-menu/core-menu.html">
 <link rel="import" href="ct-results-by-builder.html">
 <link rel="import" href="ct-embedded-flakiness-dashboard.html">
+<link rel="import" href="ct-popout-iframe.html">
 
 <polymer-element name="ct-results-panel" attributes="failures tree">
   <template>
@@ -55,7 +56,7 @@ found in the LICENSE file.
       <div class="message">No results to display.</div>
     </template>
     <template if="{{ failures.url }}">
-      <iframe src='{{ failures.url }}'></iframe>
+      <ct-popout-iframe src="{{ failures.url }}"></ct-popout-iframe>
     </template>
     <template if="{{ failures.length }}">
       <core-menu selected="{{ selected }}">