Fix ANGLE patching/building issues.

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: http://angleproject.googlecode.com/svn/trunk@1832 736b8ea6-26fd-11df-bfd4-992fa37f6226
Build fix for qt-wk2
Review URL: https://codereview.appspot.com/7381049

git-svn-id: http://angleproject.googlecode.com/svn/trunk@1833 736b8ea6-26fd-11df-bfd4-992fa37f6226