Making BrowserNavigator open file browser singleton tab respecting URLs ref value

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 131 matching lines @@
     // Two URLs with differing paths are different.
     RESPECT,
     // Ignore path when finding existing tab, navigate to new URL.
     IGNORE_AND_NAVIGATE,
     // Ignore path when finding existing tab, don't navigate tab.
     IGNORE_AND_STAY_PUT,
   };
   // Default is RESPECT.
   PathBehavior path_behavior;
 
+  // What to do with the ref component of the URL for singleton navigations.
+  enum RefBehavior {
+    // Two URLs with differing refs are same.
+    IGNORE_REF,
+    // Two URLs with differing refs are different.
+    RESPECT_REF,
+  };
+  // Default is IGNORE.
+  RefBehavior ref_behavior;
+
   // [in]  Specifies a Browser object where the navigation could occur or the
   //       tab could be added. Navigate() is not obliged to use this Browser if
   //       it is not compatible with the operation being performed. If NULL,
   //       |profile| should be specified to find or create a matching Browser.
   // [out] Specifies the Browser object where the navigation occurred or the
   //       tab was added. Guaranteed non-NULL unless the disposition did not
   //       require a navigation, in which case this is set to NULL
   //       (SUPPRESS_OPEN, SAVE_TO_DISK, IGNORE_ACTION).
   // Note: If |show_window| is set to false and a new Browser is created by
   //       Navigate(), the caller is responsible for showing it so that its
@@ skipping 12 matching lines @@
 // Navigates according to the configuration specified in |params|.
 void Navigate(NavigateParams* params);
 
 // If the given navigational URL is a Singleton, return the tab index for it.
 // Otherwise, returns -1.
 int GetIndexOfSingletonTab(NavigateParams* params);
 
 }  // namespace browser
 
 #endif  // CHROME_BROWSER_UI_BROWSER_NAVIGATOR_H_