Update to Chromium version 86.0.4240.0 (#800218)

- CefURLRequest::Create is no longer supported in the renderer process
  (see https://crbug.com/891872). Use CefFrame::CreateURLRequest instead.
- Mac platform definitions have been changed from `MACOSX` to `MAC`
  (see https://crbug.com/1105907) and related CMake macro names have
  been updated. The old `OS_MACOSX` define is still set in code and CMake
  for backwards compatibility.
- Linux ARM build is currently broken (see https://crbug.com/1123214).

libcef/common/file_util_impl.cc

@@ -74,7 +74,11 @@ bool CefDirectoryExists(const CefString& path) {
 bool CefDeleteFile(const CefString& path, bool recursive) {
   if (!AllowFileIO())
     return false;
-  return base::DeleteFile(path, recursive);
+  if (recursive) {
+    return base::DeletePathRecursively(path);
+  } else {
+    return base::DeleteFile(path);
+  }
 }
 
 bool CefZipDirectory(const CefString& src_dir,