PlzNavigate: provide the FrameTreeNode ID to the network stack

content/browser/loader/resource_request_info_impl.h

Index: content/browser/loader/resource_request_info_impl.h
diff --git a/content/browser/loader/resource_request_info_impl.h b/content/browser/loader/resource_request_info_impl.h
index 29f0d71aefd17d87edaf243db7617a7bba4395fe..afc30fff60f001720b3c58b476df6da8f2a84726 100644
--- a/content/browser/loader/resource_request_info_impl.h
+++ b/content/browser/loader/resource_request_info_impl.h
@@ -43,6 +43,7 @@ class ResourceRequestInfoImpl : public ResourceRequestInfo,
       int process_type,
       int child_id,
       int route_id,
+      int frame_tree_node_id,
       int origin_pid,
       int request_id,
       int render_frame_id,
@@ -93,6 +94,11 @@ class ResourceRequestInfoImpl : public ResourceRequestInfo,
   CONTENT_EXPORT GlobalRequestID GetGlobalRequestID() const;
   GlobalRoutingID GetGlobalRoutingID() const;
 
+  // PlzNavigate
+  // The id of the FrameTreeNode that initiated this request (for a navigation
+  // request).
+  int frame_tree_node_id() const { return frame_tree_node_id_; }
+
   // May be NULL (e.g., if process dies during a transfer).
   ResourceMessageFilter* filter() const {
     return filter_.get();
@@ -185,6 +191,7 @@ class ResourceRequestInfoImpl : public ResourceRequestInfo,
   int process_type_;
   int child_id_;
   int route_id_;
+  const int64 frame_tree_node_id_;
   int origin_pid_;
   int request_id_;
   int render_frame_id_;