Navigation transitions: Place transition page in same process as destination page.

content/browser/frame_host/navigation_entry_impl.h

 // Copyright 2013 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_FRAME_HOST_NAVIGATION_ENTRY_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_ENTRY_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "content/browser/site_instance_impl.h"
@@ skipping 71 matching lines @@
   virtual void SetExtraData(const std::string& key,
                             const base::string16& data) OVERRIDE;
   virtual bool GetExtraData(const std::string& key,
                             base::string16* data) const OVERRIDE;
   virtual void ClearExtraData(const std::string& key) OVERRIDE;
   virtual void SetHttpStatusCode(int http_status_code) OVERRIDE;
   virtual int GetHttpStatusCode() const OVERRIDE;
   virtual void SetRedirectChain(const std::vector<GURL>& redirects) OVERRIDE;
   virtual const std::vector<GURL>& GetRedirectChain() const OVERRIDE;
   virtual bool IsRestored() const OVERRIDE;
+  virtual void SetVirtualURLForTransition(const GURL& url) OVERRIDE;
+  virtual const GURL& GetVirtualURLForTransition() const OVERRIDE;
 
   // Once a navigation entry is committed, we should no longer track several
   // pieces of non-persisted state, as documented on the members below.
   void ResetForCommit();
 
   void set_unique_id(int unique_id) {
     unique_id_ = unique_id;
   }
 
   // The SiteInstance tells us how to share sub-processes. This is a reference
@@ skipping 229 matching lines @@
   // --site-per-process flag is passed.  It is cleared in |ResetForCommit|
   // because we only use it while the navigation is pending.
   // TODO(creis): Move this to FrameNavigationEntry.
   int64 frame_tree_node_id_;
 
   // Used to store extra data to support browser features. This member is not
   // persisted, unless specific data is taken out/put back in at save/restore
   // time (see TabNavigation for an example of this).
   std::map<std::string, base::string16> extra_data_;
 
+  // The virtual URL, when nonempty, will override the actual URL of the page
+  // when we determine the site instance to use. This allows us to redirect
+  // a url to a particular process if need be. This entry is not persisted
+  // since it's only used by the embedder's transition layer.
+  GURL virtual_url_for_transition;
+
   // Copy and assignment is explicitly allowed for this class.
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_ENTRY_IMPL_H_