1) Remove an empty file: this causes patch apply failures when updating WebKit side ANGLE.
2) Fix a 64-to-32 conversion issue.
3) Append a change to Tokenizer.l that's left out in a previous CL. (cpp is already updated).
Review URL: https://codereview.appspot.com/7378051

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1965 736b8ea6-26fd-11df-bfd4-992fa37f6226