Cross-process postMessage

content/browser/tab_contents/navigation_entry.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_TAB_CONTENTS_NAVIGATION_ENTRY_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_NAVIGATION_ENTRY_H_
 #pragma once
 
 #include <string>
 
@@ skipping 311 matching lines @@
   }
 
   // Extra headers (separated by \n) to send during the request.
   void set_extra_headers(const std::string& extra_headers) {
     extra_headers_ = extra_headers;
   }
   const std::string& extra_headers() const {
     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
   // the page if it is available or the URL. |languages| is the list of
   // accpeted languages (e.g., prefs::kAcceptLanguages) or empty if proper
   // URL formatting isn't needed (e.g., unit tests).
   const string16& GetTitleForDisplay(const std::string& languages) const;
 
   // Returns true if the current tab is in view source mode. This will be false
   // if there is no navigation.
@@ skipping 87 matching lines @@
   bool update_virtual_url_with_url_;
   string16 title_;
   FaviconStatus favicon_;
   std::string content_state_;
   int32 page_id_;
   SSLStatus ssl_;
   content::PageTransition transition_type_;
   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_;
 
   // Whether the entry, while loading, was created for a renderer-initiated
   // navigation.  This dictates whether the URL should be displayed before the
   // navigation commits.  It is cleared on commit and not persisted.
   bool is_renderer_initiated_;
 
   // This is a cached version of the result of GetTitleForDisplay. It prevents
   // us from having to do URL formatting on the URL every time the title is
   // displayed. When the URL, virtual URL, or title is set, this should be
   // cleared to force a refresh.
   mutable string16 cached_display_title_;
 
   // Copy and assignment is explicitly allowed for this class.
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_NAVIGATION_ENTRY_H_