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 2bda3b5c68f68642b59bda16d9d5817a261636f0..6583c92f7b38ce5c5342129e02eb7d900f792f5c 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 +94,10 @@ class CORE_EXPORT HTMLFrameOwnerElement : public HTMLElement,
   bool IsDisplayNone() const override { return !widget_; }
   AtomicString Csp() const override { return g_null_atom; }
   const WebVector<WebFeaturePolicyFeature>& AllowedFeatures() const override;
+  const WebParsedFeaturePolicy& ContainerPolicy() const override;
+
+  // For unit tests, manually trigger the UpdateContainerPolicy method.
+  void UpdateContainerPolicyForTests() { UpdateContainerPolicy(); }
 
   DECLARE_VIRTUAL_TRACE();
 
@@ -108,6 +113,19 @@ class CORE_EXPORT HTMLFrameOwnerElement : public HTMLElement,
   void DisposeWidgetSoon(FrameViewBase*);
   void FrameOwnerPropertiesChanged();
 
+  // Return the origin which is to be used for feature policy container
+  // policies, when a specific origin is needed. This supports the "allow"
+  // attribute, which uses the url specified by the parent document to determine
+  // the origin when the frame is constructed.
+  virtual const RefPtr<SecurityOrigin> GetOriginForFeaturePolicy() const {
+    return SecurityOrigin::CreateUnique();
+  }
+
+  // Construct a new feature policy container policy for this frame, based on
+  // the frame attributes and the effective origin specified in the frame
+  // attributes.
+  void UpdateContainerPolicy();
+
  private:
   // Intentionally private to prevent redundant checks when the type is
   // already HTMLFrameOwnerElement.
@@ -123,6 +141,8 @@ class CORE_EXPORT HTMLFrameOwnerElement : public HTMLElement,
   Member<Frame> content_frame_;
   Member<FrameViewBase> widget_;
   SandboxFlags sandbox_flags_;
+
+  WebParsedFeaturePolicy container_policy_;
 };
 
 DEFINE_ELEMENT_TYPE_CASTS(HTMLFrameOwnerElement, IsFrameOwnerElement());