Commit 2c958eefb71f1b939dbda4477df3f0c8fa47a7b8

alokp@chromium.org 2012-05-17T20:35:42

Moved error-handling to a separate class - Diagnostics. We were earlier returning errors as tokens which did not work very well when error occured while parsing a preprocessor directive. Now all returned tokens are valid. Errors are reported via an abstract Diagnostics interface. Updated unit-tests with the new scheme. Review URL: https://codereview.appspot.com/6203089 git-svn-id: https://angleproject.googlecode.com/svn/trunk@1087 736b8ea6-26fd-11df-bfd4-992fa37f6226