Move [Get|Set]WebStoreLogin methods from ExtensionPrefs to WebstorePrivateAPI

chrome/browser/extensions/extension_prefs.h

 // Copyright (c) 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_EXTENSIONS_EXTENSION_PREFS_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 399 matching lines @@
 
   // Returns the ExtensionInfo from the prefs for delayed install information
   // for |extension_id|, if we have any. Otherwise returns NULL.
   scoped_ptr<ExtensionInfo> GetDelayedInstallInfo(
       const std::string& extension_id) const;
 
   // Returns information about all the extensions that have delayed install
   // information.
   scoped_ptr<ExtensionsInfo> GetAllDelayedInstallInfo() const;
 
-  // 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);
-
   // Returns true if the user repositioned the app on the app launcher via drag
   // and drop.
   bool WasAppDraggedByUser(const std::string& extension_id);
 
   // Sets a flag indicating that the user repositioned the app on the app
   // launcher by drag and dropping it.
   void SetAppDraggedByUser(const std::string& extension_id);
 
   // Sets a preference value that is controlled by the extension. In other
   // words, this is not a pref value *about* the extension but something
@@ skipping 215 matching lines @@
   scoped_ptr<TimeProvider> time_provider_;
 
   bool extensions_disabled_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_