Explain empty report in compare_codereview.py.
authorcommit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81>
Mon, 27 Jan 2014 16:34:45 +0000 (16:34 +0000)
committercommit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81>
Mon, 27 Jan 2014 16:34:45 +0000 (16:34 +0000)
commit788a5f0871eb832eb4c8b884de407ae1bddd2c13
treee9637b06344b2ec6791ec73e857d279fa67bb4cf
parentb3bf362ce2b17ecb77f75ebe93ab7b20499fc0cf
Explain empty report in compare_codereview.py.

Let user know when control and roll have no common trybots, instead of
being silent.

BUG=skia:
R=borenet@google.com

Author: halcanary@google.com

Review URL: https://codereview.chromium.org/135683003

git-svn-id: http://skia.googlecode.com/svn/trunk@13194 2bbb7eff-a529-9590-31e7-b0007b416f81
tools/compare_codereview.py