Add support for SINGLETON_TAB disposition to BrowserNavigator....

chrome/browser/browser.h

 // Copyright (c) 2010 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_BROWSER_H_
 #define CHROME_BROWSER_BROWSER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 607 matching lines @@
   // method will not execute the command, and the last blocked command will be
   // recorded for retrieval.
   void SetBlockCommandExecution(bool block);
 
   // Gets the last blocked command after calling SetBlockCommandExecution(true).
   // Returns the command id or -1 if there is no command blocked. The
   // disposition type of the command will be stored in |*disposition| if it's
   // not null.
   int GetLastBlockedCommand(WindowOpenDisposition* disposition);
 
+  // Called by browser::Navigate() when a navigation has occurred in a tab in
+  // this Browser. Updates the UI for the start of this navigation.
+  void UpdateUIForNavigationInTab(TabContents* contents,
+                                  PageTransition::Type transition,
+                                  bool user_initiated);
+
+  // Called by browser::Navigate() to retrieve the home page if no URL is
+  // specified.
+  virtual GURL GetHomePage() const;

[sky, 2010/10/12 17:44:19]

Does this needs to be virtual?

+
   // Interface implementations ////////////////////////////////////////////////
 
   // Overridden from PageNavigator:
   virtual void OpenURL(const GURL& url, const GURL& referrer,
                        WindowOpenDisposition disposition,
                        PageTransition::Type transition);
 
   // Overridden from CommandUpdater::CommandUpdaterDelegate:
   virtual void ExecuteCommand(int id);
 
   // Overridden from TabRestoreServiceObserver:
   virtual void TabRestoreServiceChanged(TabRestoreService* service);
   virtual void TabRestoreServiceDestroyed(TabRestoreService* service);
 
+
   // Overridden from TabHandlerDelegate:
   virtual Profile* GetProfile() const;
   virtual Browser* AsBrowser();
 
   // Overridden from TabStripModelDelegate:
   virtual TabContents* AddBlankTab(bool foreground);
   virtual TabContents* AddBlankTabAt(int index, bool foreground);
   virtual Browser* CreateNewStripWithContents(TabContents* detached_contents,
                                               const gfx::Rect& window_bounds,
                                               const DockInfo& dock_info,
@@ skipping 254 matching lines @@
   // pass specific flags to the TabStripModel. |add_types| is only used if
   // the disposition is NEW_WINDOW or SUPPRESS_OPEN.
   void OpenURLAtIndex(TabContents* source,
                       const GURL& url,
                       const GURL& referrer,
                       WindowOpenDisposition disposition,
                       PageTransition::Type transition,
                       int index,
                       int add_types);
 
-  // Returns what the user's home page is, or the new tab page if the home page
-  // has not been set.
-  GURL GetHomePage() const;
-
   // Shows the Find Bar, optionally selecting the next entry that matches the
   // existing search string for that Tab. |forward_direction| controls the
   // search direction.
   void FindInPage(bool find_next, bool forward_direction);
 
   // Closes the frame.
   // TODO(beng): figure out if we need this now that the frame itself closes
   //             after a return to the message loop.
   void CloseFrame();
 
@@ skipping 168 matching lines @@
   // The profile's tab restore service. The service is owned by the profile,
   // and we install ourselves as an observer.
   TabRestoreService* tab_restore_service_;
 
   scoped_ptr<InstantController> instant_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_H_