Propagating csp attribute changes on frameOwnerPropertiesChanged()

content/common/frame_owner_properties.h

Index: content/common/frame_owner_properties.h
diff --git a/content/common/frame_owner_properties.h b/content/common/frame_owner_properties.h
index 12325a9483fc9f0e8b5f02bbdb34c848778baeb4..edfcbd59df05463aa1972b0c75c15822e601c2ce 100644
--- a/content/common/frame_owner_properties.h
+++ b/content/common/frame_owner_properties.h
@@ -34,6 +34,11 @@ struct CONTENT_EXPORT FrameOwnerProperties {
   int margin_width;
   int margin_height;
   bool allow_fullscreen;
+  // An experimental attribute to be used by a parent frame to enforce CSP on a
+  // subframe. This is different from replicated CSP headers kept in
+  // FrameReplicationState that keep track of CSP headers currently in effect
+  // for a frame. See https://crbug.com/647588
+  std::string csp;

[alexmos, 2016/10/04 23:50:21]

Thanks for adding the comment.  Perhaps also add blank lines before comment and
after |csp|, to separate it out more from other attributes?

   std::vector<blink::WebPermissionType> delegated_permissions;
 };