Add the scheme chrome-distiller:// and hook up data source.

components/dom_distiller/webui/resources/dom_distiller_viewer.js

Index: components/dom_distiller/webui/resources/dom_distiller_viewer.js
diff --git a/chrome/common/extensions/api/test_presubmit/valid_json.json b/components/dom_distiller/webui/resources/dom_distiller_viewer.js
similarity index 56%
copy from chrome/common/extensions/api/test_presubmit/valid_json.json
copy to components/dom_distiller/webui/resources/dom_distiller_viewer.js
index 615ea28d4bea44520eaacd7834304f5d01c3a639..f0bca1a8ae8ee98841468eb6ef08e934a0c2de35 100644
--- a/chrome/common/extensions/api/test_presubmit/valid_json.json
+++ b/components/dom_distiller/webui/resources/dom_distiller_viewer.js
@@ -2,10 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Tests a valid IDL file.
-
-// This is a comment.
-{
-  "key1": ["value1", "value2"],
-  "key2": 3  // This is an inline comment.
+var domDistillerViewer = {
+  onReceivedTitle: function(title) {
+    document.getElementById('viewerTitle').innerText = title;
+  },
 }