[Extensions] Short-circuit activity logging if not enabled

extensions/browser/api/web_request/web_request_api.h

Index: extensions/browser/api/web_request/web_request_api.h
diff --git a/extensions/browser/api/web_request/web_request_api.h b/extensions/browser/api/web_request/web_request_api.h
index 51948382bbccf4f8f4e6086db1f71ea2b89b79ab..c830faf819d3389be5e3385f93f13307e4f9fe57 100644
--- a/extensions/browser/api/web_request/web_request_api.h
+++ b/extensions/browser/api/web_request/web_request_api.h
@@ -372,14 +372,6 @@ class ExtensionWebRequestEventRouter
                            uint64_t request_id,
                            EventResponse* response);
 
-  // Logs an extension action.
-  void LogExtensionActivity(void* browser_context_id,
-                            bool is_incognito,
-                            const std::string& extension_id,
-                            const GURL& url,
-                            const std::string& api_call,
-                            std::unique_ptr<base::DictionaryValue> details);
-
   // Processes the generated deltas from blocked_requests_ on the specified
   // request. If |call_back| is true, the callback registered in
   // |blocked_requests_| is called.