Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/apps/ephemeral_app_service.h

 // Copyright 2013 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_APPS_EPHEMERAL_APP_SERVICE_H_
 #define CHROME_BROWSER_APPS_EPHEMERAL_APP_SERVICE_H_
 
 #include <map>
 #include <set>
 
@@ skipping 49 matching lines @@
 
   // extensions::ExtensionRegistryObserver.
   virtual void OnExtensionWillBeInstalled(
       content::BrowserContext* browser_context,
       const extensions::Extension* extension,
       bool is_update,
       bool from_ephemeral,
       const std::string& old_name) OVERRIDE;
   virtual void OnExtensionUninstalled(
       content::BrowserContext* browser_context,
-      const extensions::Extension* extension) OVERRIDE;
+      const extensions::Extension* extension,
+      extensions::UninstallReason reason) OVERRIDE;
 
   void Init();
   void InitEphemeralAppCount();
 
   // Garbage collect ephemeral apps.
   void TriggerGarbageCollect(const base::TimeDelta& delay);
   void GarbageCollectApps();
   static void GetAppsToRemove(int app_count,
                               const LaunchTimeAppMap& app_launch_times,
                               std::set<std::string>* remove_app_ids);
@@ skipping 10 matching lines @@
   // The count of cached ephemeral apps.
   int ephemeral_app_count_;
 
   friend class EphemeralAppServiceTest;
   friend class EphemeralAppServiceBrowserTest;
 
   DISALLOW_COPY_AND_ASSIGN(EphemeralAppService);
 };
 
 #endif  // CHROME_BROWSER_APPS_EPHEMERAL_APP_SERVICE_H_