Introduce content-side Feature Policy object and maintain in parallel with renderer policy.

content/browser/frame_host/frame_tree_node.cc

Index: content/browser/frame_host/frame_tree_node.cc
diff --git a/content/browser/frame_host/frame_tree_node.cc b/content/browser/frame_host/frame_tree_node.cc
index 4ec94a661a226da74628f9462a2f8ca40c52ca3a..5a176fb6b392b5835cf7a5a14dab9cdf713be61a 100644
--- a/content/browser/frame_host/frame_tree_node.cc
+++ b/content/browser/frame_host/frame_tree_node.cc
@@ -18,6 +18,7 @@
 #include "content/browser/frame_host/navigator.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
+#include "content/common/feature_policy/feature_policy.h"

[alexmos, 2017/02/09 05:59:50]

This is no longer needed, right?

[iclelland, 2017/02/09 17:16:17]

It's still used for the definition of ParsedFeaturePolicyHeader, but that ends
up being included transitively through frame_tree_node.h ->
frame_replication_state.h -> feature_policy.h.

The normal thing here would be to leave this include in, and forward-declare in
frame_tree_node.h, but it's actually a using-declaration, so it's going to be
awkward to do that :(

I've just removed the include from this file, to at least be consistent.

 #include "content/common/frame_messages.h"
 #include "content/common/site_isolation_policy.h"
 #include "content/public/browser/browser_thread.h"
@@ -286,7 +287,7 @@ void FrameTreeNode::SetFeaturePolicyHeader(
   replication_state_.feature_policy_header = parsed_header;
 }
 
-void FrameTreeNode::ResetFeaturePolicy() {
+void FrameTreeNode::ResetFeaturePolicyHeader() {
   replication_state_.feature_policy_header.clear();
 }