Teach push script to commit with roll account.

Teach push script to commit with roll account.

BUG=410721
LOG=n
TEST=script_test.py
TBR=tandrii@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=25046

[Michael Achenbach, 2014-11-01 21:35:51]

machenbach@chromium.org changed reviewers:
+ tandrii@chromium.org

[Michael Achenbach, 2014-11-01 21:49:26]

PTAL

https://codereview.chromium.org/693333002/diff/1/tools/push-to-trunk/common_i...
File tools/push-to-trunk/common_includes.py (right):

https://codereview.chromium.org/693333002/diff/1/tools/push-to-trunk/common_i...
tools/push-to-trunk/common_includes.py:432: def GitSvn(self, hsh, branch=""):
Not so sure here. Thoughts: some scripts show svn numbers FYI and should not
die. But no script should be allowed to find a git hash base on an svn number.

https://codereview.chromium.org/693333002/diff/1/tools/push-to-trunk/test_scr...
File tools/push-to-trunk/test_scripts.py (right):

https://codereview.chromium.org/693333002/diff/1/tools/push-to-trunk/test_scr...
tools/push-to-trunk/test_scripts.py:852: def testPushToTrunkGit(self):
C/P of the test above. Will be removed again after the git switch. Reflects
exactly what the push recipe is running: pure git read and independent pure svn
write.

[Michael Achenbach, 2014-11-01 21:53:23]

Committed patchset #2 (id:20001) manually as 25046 (presubmit successful).

[tandrii(chromium), 2014-11-03 16:49:51]

lgtm