Update copyright year in generated files.

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1557 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
Fix C compiler errors when using the C API (issue #1165).
- Replace 'bool' with 'int' in cef_types[_*].h.
- Typedef enums in cef_types.h
- Add includes and struct forward declarations in C API header files.

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1558 5089003a-bbd8-11dd-ad1f-f1f9622dbc98