GM: add --ignoreFailuresFile as an alternative to --ignoreTests

(moved from old review at https://codereview.chromium.org/27752002/ )

This will allow the user to specify the tests to ignore failure on as a file,
rather than listing them out in the command line (and thus busting the
line length limit on Android).
BUG=skia:1730
R=scroggo@google.com

Review URL: https://codereview.chromium.org/29203002

git-svn-id: http://skia.googlecode.com/svn/trunk@11855 2bbb7eff-a529-9590-31e7-b0007b416f81
4 files changed