Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/extensions/external_install_manager.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_EXTERNAL_INSTALL_MANAGER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_INSTALL_MANAGER_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/scoped_observer.h"
@@ skipping 43 matching lines @@
   // Returns a mutable copy of the error for testing purposes.
   ExternalInstallError* error_for_testing() { return error_.get(); }
 
  private:
   // ExtensionRegistryObserver implementation.
   virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
                                  const Extension* extension) OVERRIDE;
   virtual void OnExtensionInstalled(content::BrowserContext* browser_context,
                                     const Extension* extension,
                                     bool is_update) 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;
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Adds a global error informing the user that an external extension was
   // installed. If |is_new_profile| is true, then this error is from the first
   // time our profile checked for new extensions.
   void AddExternalInstallError(const Extension* extension, bool is_new_profile);
@@ skipping 18 matching lines @@
 
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalInstallManager);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_INSTALL_MANAGER_H_