Field trial removing tiles from NTP if URL is already open - for 1993 clients

chrome/browser/ui/browser_instant_controller.h

 // Copyright 2012 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_INSTANT_CONTROLLER_H_
 #define CHROME_BROWSER_UI_BROWSER_INSTANT_CONTROLLER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "chrome/browser/ui/search/instant_controller.h"
 #include "chrome/browser/ui/search/instant_unload_handler.h"
 #include "chrome/browser/ui/search/search_model_observer.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/base/window_open_disposition.h"
 
 class Browser;
 struct InstantSuggestion;
 class Profile;
 class ThemeService;
 
 namespace content {
@@ skipping 22 matching lines @@
       content::WebContents* source_contents,
       content::WebContents** target_contents);
 
   // Commits the current Instant, returning true on success. This is intended
   // for use from OpenCurrentURL.
   bool OpenInstant(WindowOpenDisposition disposition, const GURL& url);
 
   // Returns the Profile associated with the Browser that owns this object.
   Profile* profile() const;
 
+  // Returns the TabStripModel associated with the Browser owning this object.
+  TabStripModel* tab_strip_model() const;

[beaudoin, 2013/06/20 21:55:44]

Can you return a const TabStripModel* ?

[annark1, 2013/07/04 18:29:15]

Done.

+
   // Returns the InstantController or NULL if there is no InstantController for
   // this BrowserInstantController.
   InstantController* instant() { return &instant_; }
 
   // Invoked by |instant_| to commit the |overlay| by merging it into the active
   // tab or adding it as a new tab.
   void CommitInstant(scoped_ptr<content::WebContents> overlay, bool in_new_tab);
 
   // Invoked by |instant_| to autocomplete the |suggestion| into the omnibox.
   void SetInstantSuggestion(const InstantSuggestion& suggestion);
@@ skipping 72 matching lines @@
   ThemeBackgroundInfo theme_info_;
 
   PrefChangeRegistrar profile_pref_registrar_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserInstantController);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_INSTANT_CONTROLLER_H_