add dictionary for bench tools to see optional cmdline args git-svn-id: http://skia.googlecode.com/svn/trunk@351 2bbb7eff-a529-9590-31e7-b0007b416f81
git-svn-id: http://skia.googlecode.com/svn/trunk@83 2bbb7eff-a529-9590-31e7-b0007b416f81