Add platform methods to check reserved IP addresses.

public/platform/Platform.h

Index: public/platform/Platform.h
diff --git a/public/platform/Platform.h b/public/platform/Platform.h
index 8c9de1ca66c9b96916e2e8805b116f61723c7530..7fc204826eca1f666869da0bb080c05f761a2fe5 100644
--- a/public/platform/Platform.h
+++ b/public/platform/Platform.h
@@ -91,6 +91,7 @@ class WebPublicSuffixList;
 class WebRTCPeerConnectionHandler;
 class WebRTCPeerConnectionHandlerClient;
 class WebSandboxSupport;
+class WebSecurityOrigin;
 class WebScrollbarBehavior;
 class WebSocketHandle;
 class WebSocketStreamHandle;
@@ -323,6 +324,8 @@ public:
 
     virtual WebURLError cancelledError(const WebURL&) const { return WebURLError(); }
 
+    virtual bool isReservedIPAddress(const WebURL&) const { return false; }
+    virtual bool isReservedIPAddress(const WebSecurityOrigin&) const { return false; }
 
     // Plugins -------------------------------------------------------------