Build failed with newest version of CEF

[hokein]

Build wxWebViewChromium with upstream CEF3 version r1623, there are several errors as below:

Error   1   error C2061: syntax error : identifier 'TerminationStatus'  c:\users\hokein\github\wxwebviewchromium\webview_chromium3.h    104
Error   2   error C2061: syntax error : identifier 'TerminationStatus'  c:\users\hokein\github\wxwebviewchromium\webview_chromium3.h    104
Error   3   error C2660: 'CefBrowserHost::CreateBrowser' : function does not take 4 arguments   C:\Users\hokein\GitHub\wxWebViewChromium\webview_chromium3.cpp  94
Error   4   error C2039: 'ParentWindowWillClose' : is not a member of 'CefBrowserHost'  C:\Users\hokein\GitHub\wxWebViewChromium\webview_chromium3.cpp  106
Error   5   error C2660: 'CefExecuteProcess' : function does not take 2 arguments   C:\Users\hokein\GitHub\wxWebViewChromium\webview_chromium3.cpp  408
Error   6   error C2660: 'CefInitialize' : function does not take 3 arguments   C:\Users\hokein\GitHub\wxWebViewChromium\webview_chromium3.cpp  419
Error   7   error C2660: 'CefExecuteProcess' : function does not take 2 arguments   C:\Users\hokein\GitHub\wxWebViewChromium\webview_chromium3.cpp  426
Error   8   error C2061: syntax error : identifier 'TerminationStatus'  C:\Users\hokein\GitHub\wxWebViewChromium\webview_chromium3.cpp  669
Error   9   error C2061: syntax error : identifier 'TerminationStatus'  c:\users\hokein\github\wxwebviewchromium\webview_chromium3.h    104
Error   10  error C2061: syntax error : identifier 'TerminationStatus'  c:\users\hokein\github\wxwebviewchromium\webview_chromium3.h    104
    11  IntelliSense: identifier "TerminationStatus" is undefined   c:\users\hokein\github\wxwebviewchromium\webview_chromium3.h    104
    12  IntelliSense: too few arguments in function call    c:\users\hokein\github\wxwebviewchromium\webview_chromium3.cpp  94
    13  IntelliSense: class "CefBrowserHost" has no member "browser"    c:\users\hokein\github\wxwebviewchromium\webview_chromium3.cpp  107
    14  IntelliSense: too few arguments in function call    c:\users\hokein\github\wxwebviewchromium\webview_chromium3.cpp  409
    15  IntelliSense: too few arguments in function call    c:\users\hokein\github\wxwebviewchromium\webview_chromium3.cpp  420
    16  IntelliSense: too few arguments in function call    c:\users\hokein\github\wxwebviewchromium\webview_chromium3.cpp  427
    17  IntelliSense: identifier "TerminationStatus" is undefined   c:\users\hokein\github\wxwebviewchromium\webview_chromium3.cpp  670

The errors are caused by some API are changed due to the new version of CEF.

@steve-lamerton should we update wxWebViewChromium to the upstream CEF or keep it?