ui: Cleanup class/struct forward declarations

content/common/net/url_fetcher.cc

Index: content/common/net/url_fetcher.cc
diff --git a/content/common/net/url_fetcher.cc b/content/common/net/url_fetcher.cc
index f4bf457b26bf8d3863589fc3cbeb10c0fc5c2f27..6540f0da7cc2afe2b6c88b6388d6fd055ce8ec61 100644
--- a/content/common/net/url_fetcher.cc
+++ b/content/common/net/url_fetcher.cc
@@ -19,15 +19,16 @@ base::SupportsUserData::Data* CreateURLRequestUserData(int render_process_id,
 
 }  // namespace
 
-void AssociateURLFetcherWithRenderFrame(net::URLFetcher* url_fetcher,
-                                        const GURL& initiator,
-                                        int render_process_id,
-                                        int render_frame_id) {
-  url_fetcher->SetInitiatorURL(initiator);
+void AssociateURLFetcherWithRenderFrame(
+    net::URLFetcher* url_fetcher,
+    const base::Optional<url::Origin>& initiator,
+    int render_process_id,
+    int render_frame_id) {
+  url_fetcher->SetInitiator(initiator);
   url_fetcher->SetURLRequestUserData(
       URLRequestUserData::kUserDataKey,
-      base::Bind(&CreateURLRequestUserData,
-                 render_process_id, render_frame_id));
+      base::Bind(&CreateURLRequestUserData, render_process_id,
+                 render_frame_id));
 }
 
 }  // namespace content