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

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 83026ed3ce6842214ef186c65e50f4c0f73b8ea4..2fcc711e94bde52981e30da451bfb858ce7c5572 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -1044,10 +1044,12 @@ bool ChromeContentBrowserClient::ShouldUseProcessPerSite(
   return true;
 }
 
-// These are treated as WebUI schemes but do not get WebUI bindings.
+// These are treated as WebUI schemes but do not get WebUI bindings. Also,
+// view-source is allowed for these schemes.
 void ChromeContentBrowserClient::GetAdditionalWebUISchemes(
     std::vector<std::string>* additional_schemes) {
   additional_schemes->push_back(chrome::kChromeSearchScheme);
+  additional_schemes->push_back(chrome::kDomDistillerScheme);
 }
 
 net::URLRequestContextGetter*