PlzNavigate: properly set the initiator of the navigation

content/browser/frame_host/navigation_request_info.h

Index: content/browser/frame_host/navigation_request_info.h
diff --git a/content/browser/frame_host/navigation_request_info.h b/content/browser/frame_host/navigation_request_info.h
index 35f88c863161371afe6576acd6fcd3c459120802..ce81bb88918dea5a1b326e08a4d0be8c6e4fad38 100644
--- a/content/browser/frame_host/navigation_request_info.h
+++ b/content/browser/frame_host/navigation_request_info.h
@@ -25,7 +25,6 @@ struct CONTENT_EXPORT NavigationRequestInfo {
   NavigationRequestInfo(const CommonNavigationParams& common_params,
                         const BeginNavigationParams& begin_params,
                         const GURL& first_party_for_cookies,
-                        const url::Origin& request_initiator,
                         bool is_main_frame,
                         bool parent_is_main_frame,
                         bool are_ancestors_secure,
@@ -42,9 +41,6 @@ struct CONTENT_EXPORT NavigationRequestInfo {
   // checked by the third-party cookie blocking policy.
   const GURL first_party_for_cookies;
 
-  // The origin of the context which initiated the request.
-  const url::Origin request_initiator;
-
   const bool is_main_frame;
   const bool parent_is_main_frame;