ui: Cleanup class/struct forward declarations

content/public/common/url_fetcher.h

Index: content/public/common/url_fetcher.h
diff --git a/content/public/common/url_fetcher.h b/content/public/common/url_fetcher.h
index 901e7655177c9561e506df69a33c23b71e0c8839..bc9f1436d82dd7a6a5ff37b8ab50b35118963993 100644
--- a/content/public/common/url_fetcher.h
+++ b/content/public/common/url_fetcher.h
@@ -5,21 +5,24 @@
 #ifndef CONTENT_PUBLIC_COMMON_URL_FETCHER_H_
 #define CONTENT_PUBLIC_COMMON_URL_FETCHER_H_
 
+#include "base/optional.h"
 #include "content/common/content_export.h"
 
-class GURL;
-
 namespace net {
 class URLFetcher;
 }  // namespace
 
+namespace url {
+class Origin;
+}  // namespace
+
 namespace content {
 
 // Mark URLRequests started by the URLFetcher to stem from the given render
 // frame.
 CONTENT_EXPORT void AssociateURLFetcherWithRenderFrame(
     net::URLFetcher* url_fetcher,
-    const GURL& first_party_for_cookies,
+    const base::Optional<url::Origin>& initiator,
     int render_process_id,
     int render_frame_id);