Cross-process postMessage

content/browser/tab_contents/navigation_entry.h

Index: content/browser/tab_contents/navigation_entry.h
diff --git a/content/browser/tab_contents/navigation_entry.h b/content/browser/tab_contents/navigation_entry.h
index eea3f350213ba3a1a7d71533dcaca5d2a63b8458..19967ef5896cfb9de168da4346c9386b8a926bb7 100644
--- a/content/browser/tab_contents/navigation_entry.h
+++ b/content/browser/tab_contents/navigation_entry.h
@@ -329,6 +329,15 @@ class CONTENT_EXPORT NavigationEntry {
     return extra_headers_;
   }
 
+  // Used to support swapouts of frames with non-null openers
+  void set_opener_browsing_instance_frame_id(int64 id) {
+    opener_browsing_instance_frame_id_ = id;
+  }
+
+  int64 opener_browsing_instance_frame_id() const {
+    return opener_browsing_instance_frame_id_;
+  }
+
   // Page-related helpers ------------------------------------------------------
 
   // Returns the title to be displayed on the tab. This could be the title of
@@ -436,6 +445,7 @@ class CONTENT_EXPORT NavigationEntry {
   GURL user_typed_url_;
   bool has_post_data_;
   RestoreType restore_type_;
+  int64 opener_browsing_instance_frame_id_;

[Charlie Reis, 2011/12/01 23:13:02]

Do we need to persist this?  (I suppose it could let tabs script each other
after a session restore if we do, which would be pretty cool.)  The comment
above suggests we need to be very careful about that, though.

[supersat, 2011/12/09 23:08:20]

We'll only need to persist this if we restore scripting connections. However,
I'm not sure we necessarily want to do that because same-origin scripting
connections will not be persisted (AFAIK), and I think we should try to be
consistent.

[Charlie Reis, 2011/12/12 22:20:36]

Let's avoid persisting it for now, then, and we can persist it later if we want
to restore scripting connections.  In that case, please move this to the bottom
and add a comment including the fact that this won't be persisted.

[supersat, 2011/12/15 19:30:49]

Done.

 
   // This member is not persisted with sesssion restore.
   std::string extra_headers_;