Tag SecurityContext objects as being hosted in reserved IP ranges.

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 507d627f874bfd3470db64f9c514df53beb3012b..ef6ee432113e3cde5abba776a6b3a5475f83941a 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -4676,6 +4676,9 @@ void Document::initSecurityContext(const DocumentInit& initializer)
         return;
     }
 
+    if (initializer.isHostedInReservedIPRange())
+        setHostedInReservedIPRange();
+
     if (!initializer.hasSecurityContext()) {
         // No source for a security context.
         // This can occur via document.implementation.createDocument().