| Index: extensions/browser/api/web_request/web_request_api.cc | 
| diff --git a/extensions/browser/api/web_request/web_request_api.cc b/extensions/browser/api/web_request/web_request_api.cc | 
| index 60e857253fc927502c2811c48a64d9c03b5f72dc..d1d73967f9f02fc7755a9e11df401f5f2d1a0331 100644 | 
| --- a/extensions/browser/api/web_request/web_request_api.cc | 
| +++ b/extensions/browser/api/web_request/web_request_api.cc | 
| @@ -395,7 +395,9 @@ WebRequestAPI::WebRequestAPI(content::BrowserContext* context) | 
| } | 
| } | 
|  | 
| -WebRequestAPI::~WebRequestAPI() { | 
| +WebRequestAPI::~WebRequestAPI() = default; | 
| + | 
| +void WebRequestAPI::Shutdown() { | 
| EventRouter::Get(browser_context_)->UnregisterObserver(this); | 
| } | 
|  | 
|  |