tree 612af3c1317d2ddf8c5aa58bc0051fd987d5fc66
parent 9c875d34ff13d82f581448ced0d9eb5b067368b9
author edisonn@google.com <edisonn@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 1350594239 +0000
committer edisonn@google.com <edisonn@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 1350594239 +0000

PDF: Fail fast if in the tree of resources a child references a parent. Ideally I want a crash when the tree of resources became corrupt, not later when we try to finalize the pdf.
Review URL: https://codereview.appspot.com/6740047

git-svn-id: http://skia.googlecode.com/svn/trunk@6006 2bbb7eff-a529-9590-31e7-b0007b416f81