Fix 57090: NTP apps sorted in random-looking order....

chrome/browser/extensions/extension_prefs.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_EXTENSIONS_EXTENSION_PREFS_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 154 matching lines @@
   std::set<std::string> GetIdleInstallInfoIds();
 
   // We allow the web store to set a string containing login information when a
   // purchase is made, so that when a user logs into sync with a different
   // account we can recognize the situation. The Get function returns true if
   // there was previously stored data (placing it in |result|), or false
   // otherwise. The Set will overwrite any previous login.
   bool GetWebStoreLogin(std::string* result);
   void SetWebStoreLogin(const std::string& login);
 
+  // Get the application launch index for an extension with |extension_id|. This
+  // determines the order of which the applications appear on the New Tab Page.
+  // A value of 0 generally indicates top left. If the extension has no launch
+  // index a -1 value is returned.
+  int GetAppLaunchIndex(const std::string& extension_id);
+
+  // Sets a specific launch index for an extension with |extension_id|.
+  void SetAppLaunchIndex(const std::string& extension_id, int index);
+
+  // Gets the next available application launch index. This is 1 higher than the
+  // highest current application launch index found.
+  int GetNextAppLaunchIndex();
+
   static void RegisterUserPrefs(PrefService* prefs);
 
   // The underlying PrefService.
   PrefService* pref_service() const { return prefs_; }
 
  private:
   // Converts absolute paths in the pref to paths relative to the
   // install_directory_.
   void MakePathsRelative();
 
@@ skipping 56 matching lines @@
   // Base extensions install directory.
   FilePath install_directory_;
 
   // The URLs of all of the toolstrips.
   URLList shelf_order_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_