Use builder_type when requesting/fetching builds, and add support for full linux builds.

Use builder_type when requesting/fetching builds, and add support for full linux builds.

Changes in this CL:
 - In request_build.py, add a URL for linux try bot.
 - Add sample config for functional bisect.
 - Make perf-related config parameters optional.
 - Use builder type when starting build try jobs, and when fetching builds.

A few other changes:
 - Update bisect_perf_regression.py file docstring.
 - Rename _BuilderTryjob to _StartBuilderTryJob and refactor.
 - Remove unused code in request_build.py.

Proposed follow-up:
 - Move functions related to builder to be methods of one class, so that the builder-specific info/logic (e.g. builder bot and archive location) is in one place.

BUG=

Committed: https://crrev.com/bd0f02085daa509d9d56a9c313976e814759eb82
Cr-Commit-Position: refs/heads/master@{#313415}

[qyearsley, 2015-01-16 19:17:53]

qyearsley@chromium.org changed reviewers:
+ prasadv@chromium.org

[qyearsley, 2015-01-20 05:26:13]

Hi Prasad and Roberto, this CL is intended to set things up to start using full
builds (for functional bisect) -- still no successful full builds yet, because
the builder try bot on tryserver.chromium.linux is failing to upload to cloud
storage (see
http://build.chromium.org/p/tryserver.chromium.linux/builders/bisect_builder).

However, that issue is not related to this CL; the main purpose of this CL is to
set up some more plumbing so that functional bisects can be run once that
builder is archiving as expected.

PTAL, and see if there's anything that should be done differently, or anything
that should be taken out of this CL :-)

[prasadv, 2015-01-27 22:54:32]

https://codereview.chromium.org/806943007/diff/100001/tools/auto_bisect/bisec...
File tools/auto_bisect/bisect_perf_regression.py (right):

https://codereview.chromium.org/806943007/diff/100001/tools/auto_bisect/bisec...
tools/auto_bisect/bisect_perf_regression.py:682: """Returns an SVN repo to use
for try jbos based on the builder type."""
Nit:s/jbos/jobs

https://codereview.chromium.org/806943007/diff/100001/tools/auto_bisect/fetch...
File tools/auto_bisect/fetch_build.py (right):

https://codereview.chromium.org/806943007/diff/100001/tools/auto_bisect/fetch...
tools/auto_bisect/fetch_build.py:77: builder_type, target_arch, target_platform)
Nit: indentation

https://codereview.chromium.org/806943007/diff/100001/tools/auto_bisect/reque...
File tools/auto_bisect/request_build.py (right):

https://codereview.chromium.org/806943007/diff/100001/tools/auto_bisect/reque...
tools/auto_bisect/request_build.py:169: return
'http://build.chromium.org/p/tryserver.chromium.linux'
May be using a constant for this will make it consistent with other codes.

[prasadv, 2015-01-27 22:54:38]

lgtm

[qyearsley, 2015-01-27 23:35:11]

Thanks for the review :-)

[qyearsley, 2015-01-27 23:35:18]

The CQ bit was checked by qyearsley@chromium.org

[commit-bot: I haz the power, 2015-01-27 23:36:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/806943007/120001

[commit-bot: I haz the power, 2015-01-28 00:27:34]

Committed patchset #7 (id:120001)

[commit-bot: I haz the power, 2015-01-28 00:28:54]

Patchset 7 (id:??) landed as
https://crrev.com/bd0f02085daa509d9d56a9c313976e814759eb82
Cr-Commit-Position: refs/heads/master@{#313415}