Require the entry document to have the same origin as the open()d document

This implements step 3) of https://html.spec.whatwg.org/#dom-document-open

BUG=579493
[email protected],[email protected]

Review URL: https://codereview.chromium.org/1611523002

Cr-Commit-Position: refs/heads/master@{#372330}
diff --git a/third_party/WebKit/LayoutTests/TestExpectations b/third_party/WebKit/LayoutTests/TestExpectations
index d88cd64..52971740 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -1371,6 +1371,8 @@
 
 crbug.com/572714 [ Linux ] inspector/sources/debugger/debug-inlined-scripts.html [ Timeout Crash Pass ]
 
+crbug.com/579493 http/tests/security/xss-DENIED-xsl-document-securityOrigin.xml [ Timeout ]
+
 crbug.com/572723 [ Mac10.7 Release ] inspector/sources/debugger/debugger-completions-on-call-frame.html [ Timeout Pass ]
 crbug.com/572723 [ Linux Mac10.9 ] inspector/sources/debugger/debugger-disable-enable.html [ Pass Failure Timeout ]
 crbug.com/572723 inspector/sources/debugger/debugger-uncaught-promise-on-pause.html [ Timeout Pass ]