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

content/browser/browser_url_handler_impl.cc

Index: content/browser/browser_url_handler_impl.cc
diff --git a/content/browser/browser_url_handler_impl.cc b/content/browser/browser_url_handler_impl.cc
index fb657c0547b9c87e969cb4293e07878d6bbc6afd..0832cae0013da51f7c21c7798fdba9d8ad653cdf 100644
--- a/content/browser/browser_url_handler_impl.cc
+++ b/content/browser/browser_url_handler_impl.cc
@@ -37,6 +37,24 @@ static bool HandleViewSource(GURL* url, BrowserContext* browser_context) {
       }
     }
 
+    // If none of the default allowed schemes match, try with additional schemes
+    // from the ContentClient.
+    if (!is_sub_scheme_allowed) {
+      std::vector<std::string> additional_schemes;
+      GetContentClient()->browser()->GetAdditionalSchemesForViewSource(
+          &additional_schemes);
+      for (std::vector<std::string>::const_iterator it =

[bengr, 2014/01/24 17:10:40]

for (size_t i = 0; i < additional_schemes.size(); ++i) {
  if (url->SchemeIs(additional_schemes[i].c_str()))...

+               additional_schemes.begin();
+           it != additional_schemes.end();
+           ++it) {
+        std::string scheme = *it;
+        if (url->SchemeIs(scheme.c_str())) {
+          is_sub_scheme_allowed = true;
+          break;
+        }
+      }
+    }
+
     if (!is_sub_scheme_allowed) {
       *url = GURL(kAboutBlankURL);
       return false;