Custom handlers should throw SecurityError exception if the URL's origin differs from the document'…

LayoutTests/navigatorcontentutils/is-protocol-handler-registered.html

Index: LayoutTests/navigatorcontentutils/is-protocol-handler-registered.html
diff --git a/LayoutTests/navigatorcontentutils/is-protocol-handler-registered.html b/LayoutTests/navigatorcontentutils/is-protocol-handler-registered.html
index c015588eb72d2f1d91f65860245c6d39fdb8fd1f..f17a1a064b5d871d6a6662e43d8f7a4ca3e6ca75 100644
--- a/LayoutTests/navigatorcontentutils/is-protocol-handler-registered.html
+++ b/LayoutTests/navigatorcontentutils/is-protocol-handler-registered.html
@@ -47,6 +47,21 @@ invalid_schemes.forEach(function (scheme) {
         debug('FAIL Invalid scheme "' + scheme + '" allowed. Threw exception: "' + errorMessage + '".');
 });
 
+// Test that the API throws SecurityError exception if the URL's origin differs from the document's origin.
+succeeded = false;
+var errorMessage;
+try {
+    window.navigator.isProtocolHandlerRegistered('web+myprotocol', "http://www.example.com/soup?url=%s");
+} catch (e) {
+    succeeded = true;
+    errorMessage = e.message;
+}
+
+if (succeeded)
+    debug('PASS Invalid url threw SecurityError exception: "' + errorMessage + '".');
+else
+    debug('FAIL URL with origin different than document origin is allowed.');
+
 debug("\nCheck if isProtocolHandlerRegistered() works correctly. If isProtocolHandlerRegistered() returns 'new' state, it works well.");
 debug("'bitcoin' protocol will be registered, and then checks if the 'bitcoin' protocol is registered by isProtocolHandlerRegistered().\n");
 try {