Add security checks to scheduled actions

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index dc9440c2e30d3484e279a8c4a977016f5c3e3e2e..543d24b5f493fc9a49a9df54000e642c36bca0df 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -897,8 +897,15 @@ void Internals::setFormControlStateOfHistoryItem(
 DOMWindow* Internals::pagePopupWindow() const {
   if (!m_document)
     return nullptr;
-  if (Page* page = m_document->page())
-    return page->chromeClient().pagePopupWindowForTesting();
+  if (Page* page = m_document->page()) {
+    LocalDOMWindow* popup =
+        toLocalDOMWindow(page->chromeClient().pagePopupWindowForTesting());
+    if (popup) {
+      // We need to make the popup same origin so layout tests can access it.
+      popup->document()->setSecurityOrigin(m_document->getSecurityOrigin());
+    }
+    return popup;
+  }
   return nullptr;
 }