Moved some functions off ExtensionService into a new file extension_util.

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 351 matching lines @@
 
   // Set/Get whether or not the app is active. Used to force a launch of apps
   // that don't handle onRestarted() on a restart. We can only safely do that if
   // the app was active when it was last running.
   void SetIsActive(const std::string& extension_id, bool is_active);
   bool IsActive(const std::string& extension_id);
 
   // Returns true if the user enabled this extension to be loaded in incognito
   // mode.
   //
-  // IMPORTANT: you probably want to use ExtensionService::IsIncognitoEnabled
+  // IMPORTANT: you probably want to use extension_utils::IsIncognitoEnabled
   // instead of this method.
-  bool IsIncognitoEnabled(const std::string& extension_id);
+  bool IsIncognitoEnabled(const std::string& extension_id) const;
   void SetIsIncognitoEnabled(const std::string& extension_id, bool enabled);
 
   // Returns true if the user has chosen to allow this extension to inject
   // scripts into pages with file URLs.
-  bool AllowFileAccess(const std::string& extension_id);
+  //
+  // IMPORTANT: you probably want to use extension_utils::AllowFileAccess
+  // instead of this method.
+  bool AllowFileAccess(const std::string& extension_id) const;
   void SetAllowFileAccess(const std::string& extension_id, bool allow);
   bool HasAllowFileAccessSetting(const std::string& extension_id) const;
 
   // Get the launch type preference.  If no preference is set, return
   // |default_pref_value|.
   LaunchType GetLaunchType(const Extension* extension,
                            LaunchType default_pref_value);
 
   void SetLaunchType(const std::string& extension_id, LaunchType launch_type);
 
@@ skipping 242 matching lines @@
   scoped_ptr<TimeProvider> time_provider_;
 
   bool extensions_disabled_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_