Replicate feature policy container policies.

third_party/WebKit/Source/core/html/HTMLFrameElementBase.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann (hausmann@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 146 matching lines @@
   } else if (name == onbeforeunloadAttr) {
     // FIXME: should <frame> elements have beforeunload handlers?
     SetAttributeEventListener(
         EventTypeNames::beforeunload,
         CreateAttributeEventListener(this, name, value, EventParameterName()));
   } else {
     HTMLFrameOwnerElement::ParseAttribute(params);
   }
 }
 
+const RefPtr<SecurityOrigin> HTMLFrameElementBase::GetOriginForFeaturePolicy()
+    const {
+  KURL url = GetDocument().CompleteURL(url_);

[dcheng, 2017/04/18 16:26:37]

Nit: move this down to line 173

[iclelland, 2017/04/18 19:19:44]

Done.

+  // Sandboxed frames have a unique origin.
+  if (GetSandboxFlags() & kSandboxOrigin)
+    return SecurityOrigin::CreateUnique();
+
+  // If the frame will inherit its origin from the owner, then use the owner's
+  // origin when constructing the container policy.
+  if (Document::ShouldInheritSecurityOriginFromOwner(url))
+    return GetDocument().GetSecurityOrigin();
+
+  // Other frames should use the origin defined by the absolute URL (this will
+  // be a unique origin for data: URLs)
+  return SecurityOrigin::Create(url);
+}
+
 void HTMLFrameElementBase::SetNameAndOpenURL() {
   frame_name_ = GetNameAttribute();
   OpenURL();
 }
 
 Node::InsertionNotificationRequest HTMLFrameElementBase::InsertedInto(
     ContainerNode* insertion_point) {
   HTMLFrameOwnerElement::InsertedInto(insertion_point);
   return kInsertionShouldCallDidNotifySubtreeInsertions;
 }
@@ skipping 95 matching lines @@
 
   if (contentDocument()) {
     contentDocument()->WillChangeFrameOwnerProperties(
         margin_width_, margin_height, scrolling_mode_, IsDisplayNone());
   }
   margin_height_ = margin_height;
   FrameOwnerPropertiesChanged();
 }
 
 }  // namespace blink