How to reproduce:
1. Open the repro project that is using CefGlue
2. In the Player Settings, set the Scripting Backend to IL2CPP
3. Build the project

Expected result: Project builds successfully.
Actual result: Building the project fails with Console errors (see below).

Reproducible with - 2018.1.9f2, 2018.2.8f1, 2018.3.0b2, 2019.1.0a2
Not reproducible with - 2018.2.9f1, 2018.2.11f1, 2018.3.0b3, 2018.3.0b4, 2019.1.0a3

Note: Not tested on versions prior 2018.1, since support for IL2CPP scripting backend for Windows Standalone was not yet introduced.

Error thrown:
IL2CPP error for method 'Xilium.CefGlue.Interop.cef_app_t* Xilium.CefGlue.Interop.cef_app_t::Alloc()' in assembly 'C:\Users\user_name\Desktop\New folder (2)\CEF_01-master\Temp\StagingArea\Data\Managed\Xilium.CefGlue.dll'
Additional information: Build a development build for more information. Unable to cast object of type 'Mono.Cecil.PointerType' to type 'Mono.Cecil.ByReferenceType'.

Fixed in 2019.1.0a3
Backported to 2018.2.9f1, 2018.3.0b3