Wrapping leaf nodes in non polymer elements

runtime/observatory/lib/src/elements/error_ref.html

Index: runtime/observatory/lib/src/elements/error_ref.html
diff --git a/runtime/observatory/lib/src/elements/error_ref.html b/runtime/observatory/lib/src/elements/error_ref.html
deleted file mode 100644
index 57de134360519f2e41bb76fe75b3e8c526d82022..0000000000000000000000000000000000000000
--- a/runtime/observatory/lib/src/elements/error_ref.html
+++ /dev/null
@@ -1,26 +0,0 @@
-<link rel="import" href="../../../../packages/polymer/polymer.html">
-<link rel="import" href="curly_block.html">
-<link rel="import" href="observatory_element.html">
-<link rel="import" href="service_ref.html">
-
-<polymer-element name="error-ref" extends="service-ref">
-  <template>
-    <link rel="stylesheet" href="css/shared.css">
-    <style>
-      .errorBox {
-        background-color: #f5f5f5;
-        border: 1px solid #ccc;
-        padding: 10px;
-        font-family: consolas, courier, monospace;
-        font-size: 1em;
-        line-height: 1.2em;
-        white-space: pre;
-      }
-    </style>
-    <span>
-      <pre class="errorBox">{{ ref.message }}</pre>
-    </span>
-  </template>
-</polymer-element>
-
-<script type="application/dart" src="error_ref.dart"></script>