Cross-process postMessage

chrome/browser/ui/browser_navigator.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 CHROME_BROWSER_UI_BROWSER_NAVIGATOR_H_
 #define CHROME_BROWSER_UI_BROWSER_NAVIGATOR_H_
 #pragma once
 
 #include <string>
 
@@ skipping 81 matching lines @@
   // |tabstrip_add_types|.
   WindowOpenDisposition disposition;
 
   // The transition type of the navigation. Default is PageTransition::LINK
   // when target_contents is specified in the constructor.
   content::PageTransition transition;
 
   // Whether this navigation was initiated by the renderer process.
   bool is_renderer_initiated;
 
+  // If we're navigating a frame that has an opener, this will be set to the
+  // opener's browsing instance frame id. This lets us preserve opener chains
+  // across processes. -1 means no opener.
+  int64 opener_browsing_instance_frame_id;
+
   // The index the caller would like the tab to be positioned at in the
   // TabStrip. The actual index will be determined by the TabHandler in
   // accordance with |add_types|. Defaults to -1 (allows the TabHandler to
   // decide).
   int tabstrip_index;
 
   // A bitmask of values defined in TabStripModel::AddTabTypes. Helps
   // determine where to insert a new tab and whether or not it should be
   // selected, among other properties. Default is ADD_ACTIVE.
   int tabstrip_add_types;
@@ skipping 85 matching lines @@
 // If the given navigational URL is a Singleton, return the tab index for it.
 // Otherwise, returns -1.
 int GetIndexOfSingletonTab(NavigateParams* params);
 
 // Returns true if the url is allowed to open in incognito window.
 bool IsURLAllowedInIncognito(const GURL& url);
 
 }  // namespace browser
 
 #endif  // CHROME_BROWSER_UI_BROWSER_NAVIGATOR_H_