Replicate feature policy headers to remote frames

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 1115f80527d5811b2a518473947ab65682847fd5..9b2017877259cf69ac38b3f64fa918600201f5a7 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -3122,6 +3122,14 @@ void RenderFrameImpl::didChangeSandboxFlags(blink::WebFrame* child_frame,
       routing_id_, GetRoutingIdForFrameOrProxy(child_frame), flags));
 }
 
+void RenderFrameImpl::didAddFeaturePolicyHeader(
+    const blink::WebString& header_value) {
+  if (!SiteIsolationPolicy::AreCrossProcessFramesPossible())
+    return;
+  Send(new FrameHostMsg_DidAddFeaturePolicyHeader(
+      routing_id_, base::UTF16ToUTF8(base::StringPiece16(header_value))));
+}
+
 void RenderFrameImpl::didAddContentSecurityPolicy(
     const blink::WebString& header_value,
     blink::WebContentSecurityPolicyType type,