Throw when blocking top-level navigation.

third_party/WebKit/LayoutTests/W3CImportExpectations

Index: third_party/WebKit/LayoutTests/W3CImportExpectations
diff --git a/third_party/WebKit/LayoutTests/W3CImportExpectations b/third_party/WebKit/LayoutTests/W3CImportExpectations
index 41d235c0c84a9b4c27d6690a3531314075bf6c93..cdbed9c8e9f13123676266126b0e79c75ca22eaa 100644
--- a/third_party/WebKit/LayoutTests/W3CImportExpectations
+++ b/third_party/WebKit/LayoutTests/W3CImportExpectations
@@ -365,6 +365,7 @@ imported/wpt/html/browsers/browsing-the-web/read-text/load-text-plain.html [ Ski
 # crbug.com/498120: Using absolute URL links.
 imported/wpt/dom/events/EventTarget-dispatchEvent.html [ Skip ]
 imported/wpt/html/browsers/history/the-location-interface/location-stringifier.html [ Skip ]
+imported/wpt/html/browsers/history/the-location-interface/security_location_0.sub.htm [ Skip ]

[Mike West, 2016/09/28 12:26:13]

This test now fails because we're not running WPT, so the URL substitutions
don't happen. Our old behavior was disguising this failure, as the URL failure
would transparently fail. We now match Firefox's behavior for this test (when
loaded as a `file:` and not through `wptserve`.

 imported/wpt/html/dom/documents/dom-tree-accessors/document.title-07.html [ Skip ]
 imported/wpt/html/dom/documents/dom-tree-accessors/Document.currentScript.sub.html [ Skip ]
 imported/wpt/html/editing/dnd/the-draggable-attribute/draggable_attribute.html [ Skip ]