Move most Feature Policy code into content/

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 701787120d6ce6863e0ea4672ceeeb46e037e361..4032e8e75cda676077a2fe916f42b5dac7f342b7 100644
--- a/content/browser/frame_host/frame_tree_node.h
+++ b/content/browser/frame_host/frame_tree_node.h
@@ -17,6 +17,7 @@
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/frame_host/render_frame_host_manager.h"
 #include "content/common/content_export.h"
+#include "content/common/feature_policy/feature_policy.h"
 #include "content/common/frame_owner_properties.h"
 #include "content/common/frame_replication_state.h"
 #include "third_party/WebKit/public/platform/WebInsecureRequestPolicy.h"
@@ -155,7 +156,7 @@ class CONTENT_EXPORT FrameTreeNode {
 
   // Set the frame's feature policy from an HTTP header, clearing any existing
   // policy.
-  void SetFeaturePolicyHeader(const ParsedFeaturePolicy& parsed_header);
+  void SetFeaturePolicyHeader(const FeaturePolicyHeader& parsed_header);
 
   // Clear any feature policy associated with the frame.
   void ResetFeaturePolicy();
@@ -350,6 +351,8 @@ class CONTENT_EXPORT FrameTreeNode {
   // proxies for this frame.
   FrameReplicationState replication_state_;
 
+  std::unique_ptr<FeaturePolicy> feature_policy_;
+
   // Track the pending sandbox flags for this frame.  When a parent frame
   // dynamically updates sandbox flags in the <iframe> element for a child
   // frame, these updated flags are stored here and are transferred into