Implementation of shared worker code path for WebView file system permission.

chrome/browser/guest_view/web_view/web_view_guest.cc

Index: chrome/browser/guest_view/web_view/web_view_guest.cc
diff --git a/chrome/browser/guest_view/web_view/web_view_guest.cc b/chrome/browser/guest_view/web_view/web_view_guest.cc
index a2a86a479c966c1a7c67715cdee83ee8d39f3cf0..332465a975e3737d06c3014f3b64bae7f338e9c7 100644
--- a/chrome/browser/guest_view/web_view/web_view_guest.cc
+++ b/chrome/browser/guest_view/web_view/web_view_guest.cc
@@ -928,7 +928,7 @@ void WebViewGuest::FileSystemAccessedSync(int render_process_id,
                                           int render_frame_id,
                                           const GURL& url,
                                           bool blocked_by_policy,
-                                          IPC::Message* reply_msg) {
+                                          base::Callback<void(bool)> callback) {
   WebViewGuest* guest =
       WebViewGuest::FromFrameID(render_process_id, render_frame_id);
   DCHECK(guest);
@@ -939,24 +939,19 @@ void WebViewGuest::FileSystemAccessedSync(int render_process_id,
                  render_process_id,
                  render_frame_id,
                  url,
-                 reply_msg));
+                 callback));
 }
 
 // static
-void WebViewGuest::FileSystemAccessedSyncResponse(int render_process_id,
-                                                  int render_frame_id,
-                                                  const GURL& url,
-                                                  IPC::Message* reply_msg,
-                                                  bool allowed) {
+void WebViewGuest::FileSystemAccessedSyncResponse(
+    int render_process_id,
+    int render_frame_id,
+    const GURL& url,
+    base::Callback<void(bool)> callback,
+    bool allowed) {
   TabSpecificContentSettings::FileSystemAccessed(
       render_process_id, render_frame_id, url, !allowed);
-  ChromeViewHostMsg_RequestFileSystemAccessSync::WriteReplyParams(reply_msg,
-                                                                  allowed);
-  content::RenderFrameHost* render_frame_host =
-      content::RenderFrameHost::FromID(render_process_id, render_frame_id);
-  if (!render_frame_id)
-    return;
-  render_frame_host->Send(reply_msg);
+  callback.Run(allowed);
 }
 
 WebViewGuest::~WebViewGuest() {