Prune shared extendion module after extension updating.

chrome/browser/extensions/api/management/management_api.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_API_MANAGEMENT_MANAGEMENT_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MANAGEMENT_MANAGEMENT_API_H_
 
 #include "base/compiler_specific.h"
 #include "base/scoped_observer.h"
 #include "base/task/cancelable_task_tracker.h"
@@ skipping 227 matching lines @@
 
  private:
   // 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 OnExtensionInstalled(content::BrowserContext* browser_context,
-                                    const Extension* extension) OVERRIDE;
+                                    const Extension* extension,
+                                    bool is_update) OVERRIDE;
   virtual void OnExtensionUninstalled(content::BrowserContext* browser_context,
                                       const Extension* extension) OVERRIDE;
 
   // Dispatches management api events to listening extensions.
   void BroadcastEvent(const Extension* extension, const char* event_name);
 
   content::BrowserContext* browser_context_;
 
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
@@ skipping 29 matching lines @@
 
   // Created lazily upon OnListenerAdded.
   scoped_ptr<ManagementEventRouter> management_event_router_;
 
   DISALLOW_COPY_AND_ASSIGN(ManagementAPI);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MANAGEMENT_MANAGEMENT_API_H_