Replicate feature policy headers to remote frames

content/browser/frame_host/frame_tree_node.h

Index: content/browser/frame_host/frame_tree_node.h
diff --git a/content/browser/frame_host/frame_tree_node.h b/content/browser/frame_host/frame_tree_node.h
index bf15e2f4c32ba34482d54a0191e36e61b8bfe3f1..1ce35db50a653ac0c2d28e9f82bc1e5e1dc5b3f2 100644
--- a/content/browser/frame_host/frame_tree_node.h
+++ b/content/browser/frame_host/frame_tree_node.h
@@ -149,6 +149,10 @@ class CONTENT_EXPORT FrameTreeNode {
   // Set the current name and notify proxies about the update.
   void SetFrameName(const std::string& name, const std::string& unique_name);
 
+  // Set the frame's feature policy, clearing any existing policy after
+  // navigation.
+  void SetFeaturePolicyHeader(const std::string& header);
+
   // Add CSP header to replication state and notify proxies about the update.
   void AddContentSecurityPolicy(const ContentSecurityPolicyHeader& header);