Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/extensions/extension_toolbar_model.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_TOOLBAR_MODEL_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_TOOLBAR_MODEL_H_
 
 #include "base/compiler_specific.h"
 #include "base/observer_list.h"
 #include "base/prefs/pref_change_registrar.h"
@@ skipping 133 matching lines @@
   // Callback when extensions are ready.
   void OnReady();
 
   // ExtensionRegistryObserver implementation.
   virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
                                  const Extension* extension) OVERRIDE;
   virtual void OnExtensionUnloaded(
       content::BrowserContext* browser_context,
       const Extension* extension,
       UnloadedExtensionInfo::Reason reason) OVERRIDE;
-  virtual void OnExtensionUninstalled(content::BrowserContext* browser_context,
-                                      const Extension* extension) OVERRIDE;
+  virtual void OnExtensionUninstalled(
+      content::BrowserContext* browser_context,
+      const Extension* extension,
+      extensions::UninstallReason reason) OVERRIDE;
 
   // To be called after the extension service is ready; gets loaded extensions
   // from the extension service and their saved order from the pref service
   // and constructs |toolbar_items_| from these data.
   void InitializeExtensionList(const ExtensionSet& extensions);
   void Populate(const ExtensionIdList& positions,
                 const ExtensionSet& extensions);
 
   // Save the model to prefs.
   void UpdatePrefs();
@@ skipping 49 matching lines @@
   base::Closure pref_change_callback_;
 
   base::WeakPtrFactory<ExtensionToolbarModel> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionToolbarModel);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_TOOLBAR_MODEL_H_