Treat reserved IP addresses as mixed content.

Source/platform/weborigin/SecurityOrigin.h

Index: Source/platform/weborigin/SecurityOrigin.h
diff --git a/Source/platform/weborigin/SecurityOrigin.h b/Source/platform/weborigin/SecurityOrigin.h
index 7112208474fcb51d3926ef00043a085e1fae7de8..a2f595a613b7e1ccb516d3f8bbfb28b42f14eafc 100644
--- a/Source/platform/weborigin/SecurityOrigin.h
+++ b/Source/platform/weborigin/SecurityOrigin.h
@@ -164,6 +164,11 @@ public:
     // Returns true if the host is one of 127.0.0.1/8, ::1/128, or "localhost".
     bool isLocalhost() const;
 
+    // Returns true if the host is reserved, as per IANA's IPv4 and IPv6 registries:
+    // http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xhtml and
+    // http://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml
+    bool isReservedIPAddress() const;
+
     // The origin is a globally unique identifier assigned when the Document is
     // created. http://www.whatwg.org/specs/web-apps/current-work/#sandboxOrigin
     //