Revert of stop using brackets within skimage output filenames (https://codereview.chromium.org/303263012/)

Reason for revert:
Broke http://108.170.220.120:10117/builders/Test-ChromeOS-Link-HD4000-x86_64-Release/builds/2806/steps/UploadSKImageResults/logs/stdio :

[13:38:43.401942] /bin/sh: 1: Syntax error: "(" unexpected
[13:38:43.902632] Command /home/chrome-bot/buildbot/skiabot-shuttle-ubuntu12-003/buildbot/third_party/chromium_buildbot/scripts/slave/../../third_party/gsutil/gsutil cp -a private /home/chrome-bot/buildbot/skiabot-shuttle-ubuntu12-003/buildbot/third_party/chromium_buildbot/slave/Test-ChromeOS-Link-HD4000-x86_64-Release/build/skia/out/Release/skimage_out/images/bitmap-64bitMD5/webp-test-webp-(123,263,587,394)/16263897892077508819.png gs://chromium-skia-gm/skimage/output/images/bitmap-64bitMD5/webp-test-webp-(123,263,587,394)/16263897892077508819.png failed with retcode 2, try 1.

Original issue's description:
> stop using brackets within skimage output filenames
>
> BUG=skia:2634
>
> Committed: https://skia.googlesource.com/skia/+/f07892413cd2359549dc187f1d10bc48d7d263ba

R=scroggo@google.com
TBR=scroggo@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:2634

Author: epoger@google.com

Review URL: https://codereview.chromium.org/314443002
1 file changed