GitHub's "Download Raw File" doesn't work with CORS error

[TakashiHSD]

Hi,

CEF can't download raw files from GitHub on CEF v120 or later.
It works fine on CEF v119.

How to reproduce:

1. Download cefclient.exe from https://cef-builds.spotifycdn.com/index ... ndows32aaa
2. Open https://github.com/chromiumembedded/cef ... /README.md
3. Click a "Download Raw File" button

Then, downloading doesn't start.

Reproduction has been confirmed only on Windows.
I have not confirmed whether this occurs in other platforms.

By tracing, the error below was logged.

```
{
"args": {
"message": {
"content": "Access to fetch at 'https://raw.githubusercontent.com/chromiumembedded/cef/master/README.md' (redirected from 'https://github.com/chromiumembedded/cef/raw/master/README.md') from origin 'https://github.com' has been blocked by CORS policy: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'.",
"url": "https://github.com/chromiumembedded/cef/blob/master/README.md"
},
"source": "JS"
},
"cat": "blink.console",
"name": "ConsoleMessage::Error",
"ph": "I",
"pid": 17392,
"s": "t",
"tid": 17084,
"ts": 327178865475,
"tts": 6476426
},
```

It seems that a cross domain access between "raw.githubusercontent.com" and "github.com" is rejected by the CORS policy.

The same error occurs in my application embedding CEF.

Does anyone know how to avoid this error without disabling CORS(`CefBrowserSettings.web_security_disabled = true`)?

Thanks,

[magreenblatt]

Please add a bug at https://github.com/chromiumembedded/cef/issues

[TakashiHSD]

Hi, magreenblatt, thank you for your reply!

> Please add a bug at https://github.com/chromiumembedded/cef/issues

I have added a bug issue.

https://github.com/chromiumembedded/cef/issues/3675

Thanks,