At commit ca97a8ee99cad1ddb6a69e14cc7a501b3e8092a4 testing/corpus was 62d61d99f65f4a9ce266ca0ecf74bc098d397fd3 according to DEPS. jaepark@ committed b63db0698bd3cac932807eb552e565b89dd2df9d to testing/corpus, but did not roll DEPS just yet.

In the meantime, I started a try job and it failed:

https://build.chromium.org/p/tryserver.client.pdfium/builders/win_xfa_clang/builds/256

and that's because in the bot_update step, it pulled in the wrong testing/corpus revision:

===Running git.bat rev-parse HEAD (attempt #1)===
In directory: pdfium/
ca97a8ee99cad1ddb6a69e14cc7a501b3e8092a4
===Succeeded in 0.0 mins===

pdfium\testing\corpus (Elapsed: 0:00:04)
----------------------------------------
[0:00:01] Started.
_____ pdfium\testing\corpus at b63db0698bd3cac932807eb552e565b89dd2df9d
...