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..c1f22b5963852e62f09672b10bbc634fb5d25ccb 100644
--- a/content/browser/webui/url_data_manager_backend.cc
+++ b/content/browser/webui/url_data_manager_backend.cc
@@ -67,6 +67,7 @@ void URLToRequest(const GURL& url, std::string* source_name,
   std::vector<std::string> additional_schemes;
   DCHECK(url.SchemeIs(chrome::kChromeDevToolsScheme) ||
          url.SchemeIs(chrome::kChromeUIScheme) ||
+         url.SchemeIs(chrome::kDomDistillerScheme) ||
          (GetContentClient()->browser()->GetAdditionalWebUISchemes(
              &additional_schemes),
           SchemeIsInSchemes(url.scheme(), additional_schemes)));
@@ -76,10 +77,16 @@ 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();