Cross-process postMessage

content/browser/tab_contents/navigation_controller.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_CONTROLLER_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_NAVIGATION_CONTROLLER_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 160 matching lines @@
   // by the navigation controller and may be deleted at any time.
   NavigationEntry* GetTransientEntry() const;
 
   // New navigations -----------------------------------------------------------
 
   // Loads the specified URL, specifying extra http headers to add to the
   // request.  Extra headers are separated by \n.
   void LoadURL(const GURL& url,
                const GURL& referrer,
                content::PageTransition type,
-               const std::string& extra_headers);
+               const std::string& extra_headers,
+               // TODO(supersat): If this is a user-initiated load,
+               // will this ever be set?

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

Reasonable question.  If you hit shift or control + enter on a URL in the
omnibox, for example, it will create a new window/tab.  We'll keep that in the
same SiteInstance if it's part of the same site, but we may change that. 
Regardless, window.opener is not set and we wouldn't be able to script the new
window.

I'm thinking a browser-initiated navigation should not set this.

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

Done.

+               int64 opener_browsing_instance_frame_id = -1);
 
   // Same as LoadURL, but for renderer-initiated navigations.  This state is
   // important for tracking whether to display pending URLs.
   void LoadURLFromRenderer(const GURL& url,
                            const GURL& referrer,
                            content::PageTransition type,
-                           const std::string& extra_headers);
+                           const std::string& extra_headers,
+                           int64 opener_browsing_instance_frame_id = -1);
 
   // Loads the current page if this NavigationController was restored from
   // history and the current page has not loaded yet.
   void LoadIfNecessary();
 
   // Renavigation --------------------------------------------------------------
 
   // Navigation relative to the "current entry"
   bool CanGoBack() const;
   bool CanGoForward() const;
@@ skipping 134 matching lines @@
 
   // Creates navigation entry and translates the virtual url to a real one.
   // Used when navigating to a new URL using LoadURL.  Extra headers are
   // separated by \n.
   static NavigationEntry* CreateNavigationEntry(
       const GURL& url,
       const GURL& referrer,
       content::PageTransition transition,
       bool is_renderer_initiated,
       const std::string& extra_headers,
-      content::BrowserContext* browser_context);
+      content::BrowserContext* browser_context,
+      int64 opener_browsing_instance_frame_id = -1);
 
  private:
   class RestoreHelper;
   friend class RestoreHelper;
   friend class TabContents;  // For invoking OnReservedPageIDRange.
 
   // Classifies the given renderer navigation (see the NavigationType enum).
   content::NavigationType ClassifyNavigation(
       const ViewHostMsg_FrameNavigate_Params& params) const;
 
@@ skipping 133 matching lines @@
   static size_t max_entry_count_;
 
   // If a repost is pending, its type (RELOAD or RELOAD_IGNORING_CACHE),
   // NO_RELOAD otherwise.
   ReloadType pending_reload_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationController);
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_NAVIGATION_CONTROLLER_H_