Replicate feature policy container policies.

content/browser/frame_host/frame_tree.cc

Index: content/browser/frame_host/frame_tree.cc
diff --git a/content/browser/frame_host/frame_tree.cc b/content/browser/frame_host/frame_tree.cc
index 48bc7137a28d3d1ac05ad886dad4fc2da386a0a0..edd5f2af25b911992464072b6b99c428c7e7cd36 100644
--- a/content/browser/frame_host/frame_tree.cc
+++ b/content/browser/frame_host/frame_tree.cc
@@ -176,6 +176,7 @@ bool FrameTree::AddFrame(FrameTreeNode* parent,
                          const std::string& frame_name,
                          const std::string& frame_unique_name,
                          blink::WebSandboxFlags sandbox_flags,
+                         const ParsedFeaturePolicyHeader& container_policy,
                          const FrameOwnerProperties& frame_owner_properties) {
   CHECK_NE(new_routing_id, MSG_ROUTING_NONE);
 
@@ -206,7 +207,8 @@ bool FrameTree::AddFrame(FrameTreeNode* parent,
   // Set sandbox flags and make them effective immediately, since initial
   // sandbox flags should apply to the initial empty document in the frame.
   added_node->SetPendingSandboxFlags(sandbox_flags);
-  added_node->CommitPendingSandboxFlags();
+  added_node->SetPendingContainerPolicy(container_policy);
+  added_node->CommitPendingFramePolicy();
 
   // Now that the new node is part of the FrameTree and has a RenderFrameHost,
   // we can announce the creation of the initial RenderFrame which already