Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/ui/app_list/extension_app_model_builder.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_UI_APP_LIST_EXTENSION_APP_MODEL_BUILDER_H_
 #define CHROME_BROWSER_UI_APP_LIST_EXTENSION_APP_MODEL_BUILDER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 61 matching lines @@
   // extensions::ExtensionRegistryObserver.
   virtual void OnExtensionLoaded(
       content::BrowserContext* browser_context,
       const extensions::Extension* extension) OVERRIDE;
   virtual void OnExtensionUnloaded(
       content::BrowserContext* browser_context,
       const extensions::Extension* extension,
       extensions::UnloadedExtensionInfo::Reason reason) OVERRIDE;
   virtual void OnExtensionUninstalled(
       content::BrowserContext* browser_context,
-      const extensions::Extension* extension) OVERRIDE;
+      const extensions::Extension* extension,
+      extensions::UninstallReason reason) OVERRIDE;
   virtual void OnShutdown(extensions::ExtensionRegistry* registry) OVERRIDE;
 
   // AppListItemListObserver.
   virtual void OnListItemMoved(size_t from_index,
                                size_t to_index,
                                app_list::AppListItem* item) OVERRIDE;
 
   scoped_ptr<ExtensionAppItem> CreateAppItem(
       const std::string& extension_id,
       const std::string& extension_name,
@@ skipping 52 matching lines @@
   // We listen to this to show app installing progress.
   extensions::InstallTracker* tracker_;
 
   // Listen extension's load, unload, uninstalled.
   extensions::ExtensionRegistry* extension_registry_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionAppModelBuilder);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_EXTENSION_APP_MODEL_BUILDER_H_