Provide WebContents::CreateParams to tab helpers.

extensions/browser/guest_view/web_view/web_view_guest.cc

Index: extensions/browser/guest_view/web_view/web_view_guest.cc
diff --git a/extensions/browser/guest_view/web_view/web_view_guest.cc b/extensions/browser/guest_view/web_view/web_view_guest.cc
index fdbf73e911befc99622f1aa97d7ef7391c24307c..1c0321c5678a24f34d41f82d81e44a148b0d2dba 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest.cc
+++ b/extensions/browser/guest_view/web_view/web_view_guest.cc
@@ -1339,12 +1339,14 @@ WebContents* WebViewGuest::OpenURLFromTab(
   return nullptr;
 }
 
-void WebViewGuest::WebContentsCreated(WebContents* source_contents,
-                                      int opener_render_process_id,
-                                      int opener_render_frame_id,
-                                      const std::string& frame_name,
-                                      const GURL& target_url,
-                                      WebContents* new_contents) {
+void WebViewGuest::WebContentsCreated(
+    WebContents* source_contents,
+    int opener_render_process_id,
+    int opener_render_frame_id,
+    const std::string& frame_name,
+    const GURL& target_url,
+    WebContents* new_contents,
+    const base::Optional<content::WebContents::CreateParams>& create_params) {
   auto* guest = WebViewGuest::FromWebContents(new_contents);
   CHECK(guest);
   guest->SetOpener(this);