SYSKEYS are getting eaten by CEF (Windows Only)

What steps will reproduce the problem?
1. Build and launch CefClient test app
2. Press ALT+Spacebar
> Alert "You pressed spacebar"

What is the expected output? What do you see instead?
In this case, the expected functionality is that Alt+Spacebar invokes the 
system menu.  

However, this was originally filed as: 
https://code.google.com/p/chromiumembedded/issues/detail?id=1299 

"SYS COMMANDS do not work from the keyboard CEF 1750/1916" -- 

To be more explicit, the following SYSKEYS do not work but there could be 
others based on language and configuration:

System Menu Shortcut (Alt+Spacebar)
Menu Accelerators (Alt+F, for instance.)  

Tapping the ALT key to give the Application Menu modal keyboard focus seems to 
work, however.

What version of the product are you using? On what operating system?
CEF 2717, Windows 8.1, VS 2010

Please provide any additional information below.

Original issue reported on code.google.com by dr.krow...@gmail.com on 22 Nov 2014 at 12:54

Merged into: #1387

anmar7889 / chromiumembedded

SYSKEYS are getting eaten by CEF (Windows Only) #1451