Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/extensions/extension_storage_monitor.h

 // Copyright 2014 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_STORAGE_MONITOR_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_STORAGE_MONITOR_H_
 
 #include <set>
 
 #include "base/memory/ref_counted.h"
@@ skipping 51 matching lines @@
   virtual void OnExtensionUnloaded(
       content::BrowserContext* browser_context,
       const Extension* extension,
       UnloadedExtensionInfo::Reason reason) OVERRIDE;
   virtual void OnExtensionWillBeInstalled(
       content::BrowserContext* browser_context,
       const Extension* extension,
       bool is_update,
       bool from_ephemeral,
       const std::string& old_name) 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;
 
   // Overridden from ExtensionUninstallDialog::Delegate:
   virtual void ExtensionUninstallAccepted() OVERRIDE;
   virtual void ExtensionUninstallCanceled() OVERRIDE;
 
   std::string GetNotificationId(const std::string& extension_id);
 
   void OnStorageThresholdExceeded(const std::string& extension_id,
                                   int64 next_threshold,
                                   int64 current_usage);
@@ skipping 69 matching lines @@
 
   friend class StorageEventObserver;
   friend class ExtensionStorageMonitorTest;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionStorageMonitor);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_STORAGE_MONITOR_H_