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

content/browser/webui/url_data_manager_backend.cc

Index: content/browser/webui/url_data_manager_backend.cc
diff --git a/content/browser/webui/url_data_manager_backend.cc b/content/browser/webui/url_data_manager_backend.cc
index 128e02375be34ef591ce7b6277338e08298f5619..d49057c8f5fb144d799ce035b1577b3b1092aa91 100644
--- a/content/browser/webui/url_data_manager_backend.cc
+++ b/content/browser/webui/url_data_manager_backend.cc
@@ -76,10 +76,16 @@ void URLToRequest(const GURL& url, std::string* source_name,
     return;
   }
 
-  // Our input looks like: chrome://source_name/extra_bits?foo .
-  // So the url's "host" is our source, and everything after the host is
-  // the path.
-  source_name->assign(url.host());
+  if (url.SchemeIs(chrome::kDomDistillerScheme)) {
+    // Our input looks like: chrome-distiller://some-entry , so the scheme of
+    // the URL is the source name.
+    source_name->assign(chrome::kDomDistillerScheme);
+  } else {
+    // Our input looks like: chrome://source_name/extra_bits?foo .
+    // So the url's "host" is our source, and everything after the host is
+    // the path.
+    source_name->assign(url.host());
+  }
 
   const std::string& spec = url.possibly_invalid_spec();
   const url_parse::Parsed& parsed = url.parsed_for_possibly_invalid_spec();