--- a/layout/svg/SVGContextPaint.cpp
+++ b/layout/svg/SVGContextPaint.cpp
@@ -59,17 +59,21 @@ SVGContextPaint::IsAllowedForImageFromUR
   nsAutoCString scheme;
   if (NS_SUCCEEDED(aURI->GetScheme(scheme)) &&
       (scheme.EqualsLiteral("chrome") || scheme.EqualsLiteral("resource"))) {
     return true;
   }
   RefPtr<BasePrincipal> principal = BasePrincipal::CreateCodebasePrincipal(aURI, OriginAttributes());
   nsString addonId;
   if (NS_SUCCEEDED(principal->GetAddonId(addonId))) {
-    return StringEndsWith(addonId, NS_LITERAL_STRING("@mozilla.org"));
+    if (StringEndsWith(addonId, NS_LITERAL_STRING("@mozilla.org"))
+        || StringEndsWith(addonId, NS_LITERAL_STRING("@mozilla.com"))
+        || StringBeginsWith(addonId, NS_LITERAL_STRING("@testpilot-"))) {
+      return true;
+    }
   }
   return false;
 }
 
 /**
  * Stores in |aTargetPaint| information on how to reconstruct the current
  * fill or stroke pattern. Will also set the paint opacity to transparent if
  * the paint is set to "none".