First attempt at a fix for #522 - this is a hack.
Keeping track for future reference
Set OptimizedDoubleBuffer appears to fix WinForms issue where previously only able to Create the browser in the constructor
Split RequestResponse into Request and Response objects
Rename RequestResponse to Response
Merge pull request #547 from amaitland/fix/522

Fix #522 - Can Only Create Browser in Constructor
Merge remote-tracking branch 'remotes/upstream/cef/2062' into cef/2171-jsb-wip