Replicate feature policy container policies.

third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.h

Index: third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.h b/third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.h
index 6ff75dfc26c709727cc0b8a8cf3e177441eccceb..9ff725dcaccd3d7c735bae8d74c03c0428c8a9ce 100644
--- a/third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.h
@@ -25,6 +25,7 @@
 #include "core/dom/Document.h"
 #include "core/frame/FrameOwner.h"
 #include "core/html/HTMLElement.h"
+#include "platform/feature_policy/FeaturePolicy.h"
 #include "platform/heap/Handle.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "platform/weborigin/SecurityPolicy.h"
@@ -93,6 +94,7 @@ class CORE_EXPORT HTMLFrameOwnerElement : public HTMLElement,
   bool isDisplayNone() const override { return !m_widget; }
   AtomicString csp() const override { return nullAtom; }
   const WebVector<WebFeaturePolicyFeature>& allowedFeatures() const override;
+  const WebParsedFeaturePolicy& containerPolicy() const override;
 
   DECLARE_VIRTUAL_TRACE();
 
@@ -107,6 +109,7 @@ class CORE_EXPORT HTMLFrameOwnerElement : public HTMLElement,
 
   void disposeWidgetSoon(FrameViewBase*);
   void frameOwnerPropertiesChanged();
+  void updateContainerPolicy();
 
  private:
   // Intentionally private to prevent redundant checks when the type is
@@ -123,6 +126,11 @@ class CORE_EXPORT HTMLFrameOwnerElement : public HTMLElement,
   Member<Frame> m_contentFrame;
   Member<FrameViewBase> m_widget;
   SandboxFlags m_sandboxFlags;
+
+  WebParsedFeaturePolicy m_containerPolicy;
+
+  // Tracks the absolute URL represented by the contents of the src attribute.
+  KURL m_absoluteURL;
 };
 
 DEFINE_ELEMENT_TYPE_CASTS(HTMLFrameOwnerElement, isFrameOwnerElement());