WebRequest: Signal end of request if start signaled

chrome/browser/extensions/api/web_request/web_request_api.h

Index: chrome/browser/extensions/api/web_request/web_request_api.h
diff --git a/chrome/browser/extensions/api/web_request/web_request_api.h b/chrome/browser/extensions/api/web_request/web_request_api.h
index 64aca354fcbf21c8fe1bbac2a63ee7e5262c9a88..f29d699a5cede3d8002bc9a9bf0be48331b63649 100644
--- a/chrome/browser/extensions/api/web_request/web_request_api.h
+++ b/chrome/browser/extensions/api/web_request/web_request_api.h
@@ -371,6 +371,9 @@ class ExtensionWebRequestEventRouter
   // OTR and vice versa).
   void* GetCrossProfile(void* profile) const;
 
+  // Returns true if |request| was already signaled to some event handlers.
+  bool WasSignaled(const net::URLRequest& request) const;
+
   // A map for each profile that maps an event name to a set of extensions that
   // are listening to that event.
   ListenerMap listeners_;