From: Jacek Caban <jacek@codeweavers.com>
Subject: [PATCH 2/2] mshtml: Report about protocol as UI resource.
Message-Id: <54C659A2.8080605@codeweavers.com>
Date: Mon, 26 Jan 2015 16:13:38 +0100

---
 dlls/mshtml/nsio.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/dlls/mshtml/nsio.c b/dlls/mshtml/nsio.c
index 44662b5..330559b 100644
--- a/dlls/mshtml/nsio.c
+++ b/dlls/mshtml/nsio.c
@@ -3668,6 +3668,22 @@ static nsresult NSAPI nsNetUtil_URIChainHasFlags(nsINetUtil *iface, nsIURI *aURI
         return NS_OK;
     }
 
+    /*
+     * We use about: protocol for loading data provided by embedder, so it should be treated as
+     * trusted source.
+     */
+    if(aFlags == URI_IS_UI_RESOURCE) {
+        cpp_bool b;
+        nsresult nsres;
+
+        nsres = nsIURI_SchemeIs(aURI, "about", &b);
+        if(NS_SUCCEEDED(nsres) && b) {
+            TRACE("Returning TRUE for about protocol.\n");
+            *_retval = TRUE;
+            return NS_OK;
+        }
+    }
+
     return nsINetUtil_URIChainHasFlags(net_util, aURI, aFlags, _retval);
 }