Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

extensions/browser/extension_registry.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 EXTENSIONS_BROWSER_EXTENSION_REGISTRY_H_
 #define EXTENSIONS_BROWSER_EXTENSION_REGISTRY_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "components/keyed_service/core/keyed_service.h"
+#include "extensions/browser/uninstall_reason.h"
 #include "extensions/common/extension_set.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 class Extension;
 class ExtensionRegistryObserver;
 
@@ skipping 62 matching lines @@
                                 bool from_ephemeral,
                                 const std::string& old_name);
 
   // Invokes the observer method OnExtensionInstalled(). The extension must be
   // contained in one of the registry's extension sets.
   void TriggerOnInstalled(const Extension* extension,
                           bool is_update);
 
   // Invokes the observer method OnExtensionUninstalled(). The extension must
   // not be any installed extension with |extension|'s ID.
-  void TriggerOnUninstalled(const Extension* extension);
+  void TriggerOnUninstalled(const Extension* extension, UninstallReason reason);
 
   // Find an extension by ID using |include_mask| to pick the sets to search:
   //  * enabled_extensions()     --> ExtensionRegistry::ENABLED
   //  * disabled_extensions()    --> ExtensionRegistry::DISABLED
   //  * terminated_extensions()  --> ExtensionRegistry::TERMINATED
   //  * blacklisted_extensions() --> ExtensionRegistry::BLACKLISTED
   // Returns NULL if the extension is not found in the selected sets.
   const Extension* GetExtensionById(const std::string& id,
                                     int include_mask) const;
 
@@ skipping 53 matching lines @@
   ObserverList<ExtensionRegistryObserver> observers_;
 
   content::BrowserContext* const browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionRegistry);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_REGISTRY_H_