Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

extensions/browser/api/runtime/runtime_api.cc

Index: extensions/browser/api/runtime/runtime_api.cc
diff --git a/extensions/browser/api/runtime/runtime_api.cc b/extensions/browser/api/runtime/runtime_api.cc
index fcd68014dede89b02ea7bb6adc0c105e0087b70e..f92b49291cef49068a1098e0634aac9a004b31c7 100644
--- a/extensions/browser/api/runtime/runtime_api.cc
+++ b/extensions/browser/api/runtime/runtime_api.cc
@@ -186,7 +186,7 @@ void RuntimeAPI::Observe(int type,
     }
     case chrome::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED: {
       const Extension* extension =
-          content::Details<const Extension>(details).ptr();
+          content::Details<const UninstalledExtensionInfo>(details)->extension;
       OnExtensionUninstalled(extension);
       break;
     }