Plumb the frame name through the popup blocker

chrome/browser/ui/browser_navigator_params.h

Index: chrome/browser/ui/browser_navigator_params.h
diff --git a/chrome/browser/ui/browser_navigator_params.h b/chrome/browser/ui/browser_navigator_params.h
index de190c6ada0bd960b9b6c6258ac2388b76098478..5eefa64d011ba8f58038beaabdecec3a5c7acbca 100644
--- a/chrome/browser/ui/browser_navigator_params.h
+++ b/chrome/browser/ui/browser_navigator_params.h
@@ -72,6 +72,9 @@ struct NavigateParams {
   GURL url;
   content::Referrer referrer;
 
+  // The frame name to be used for the main frame.
+  std::string frame_name;
+
   // The browser-global ID of the frame to navigate, or -1 for the main frame.
   int frame_tree_node_id;