Move Extension Location and Type enums to Manifest, and move InstallWarning to its own file.

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 127 matching lines @@
 
   // Called when an extension is installed, so that prefs get created.
   // If |page_ordinal| is an invalid ordinal, then a page will be found
   // for the App.
   void OnExtensionInstalled(const Extension* extension,
                             Extension::State initial_state,
                             const syncer::StringOrdinal& page_ordinal);
 
   // Called when an extension is uninstalled, so that prefs get cleaned up.
   void OnExtensionUninstalled(const std::string& extension_id,
-                              const Extension::Location& location,
+                              const Manifest::Location& location,
                               bool external_uninstall);
 
   // Called to change the extension's state when it is enabled/disabled.
   void SetExtensionState(const std::string& extension_id, Extension::State);
 
   // Returns all installed extensions
   void GetExtensions(ExtensionIdList* out);
 
   // Getter and setter for browser action visibility.
   bool GetBrowserActionVisibility(const Extension* extension);
@@ skipping 491 matching lines @@
   scoped_refptr<ContentSettingsStore> content_settings_store_;
 
   scoped_ptr<TimeProvider> time_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_