Switch breakpad DEPS to new Git repo URL.

Switch breakpad DEPS to new Git repo URL.

Breakpad is migrating to Git, and we won't be able to git-svn-export
its src/ directory. Instead we'll be using gsubtreed service to extract
src/* subtree from breakpad/breakpad git repo into breakpad/breakpad/src repo.

This CL changes DEPs to use new repo (at the same commit). Git hashes
are different because gsubtreed produces commit messages that are
different from git-svn exporter.

BUG=502355
R=primiano@chromium.org,ivanpe@chromium.org

Committed: https://crrev.com/121df6f5c96daeeb186ff59eaaff58b1a3397ae7
Cr-Commit-Position: refs/heads/master@{#346724}

[Vadim Sh., 2015-08-24 22:23:22]

PTAL

Previously referenced commit:
https://chromium.googlesource.com/external/google-breakpad/src/+/e100989d3776...
New commit:
https://chromium.googlesource.com/breakpad/breakpad/src/+/00915090d0511189d2d...

Generated by this cron-like builder (running continuously):
https://build.chromium.org/p/chromium.infra.cron/builders/gsubtreed-breakpad

[Primiano Tucci (use gerrit), 2015-08-24 22:51:21]

primiano@chromium.org changed reviewers:
+ mark@chromium.org

[Primiano Tucci (use gerrit), 2015-08-24 22:51:21]

+mark, make sure that he is onboard with the plan here.

https://codereview.chromium.org/1311263003/diff/1/DEPS
File DEPS (right):

https://codereview.chromium.org/1311263003/diff/1/DEPS#newcode100
DEPS:100: Var('chromium_git') + '/breakpad/breakpad/src.git' + '@' +
'00915090d0511189d2d41818cbf617e7cc1426f9', # from svn revision 1495
At this point the "from svn revision" doesn't make any sense, right?

[Vadim Sh., 2015-08-24 22:54:20]

On 2015/08/24 22:51:21, Primiano Tucci wrote:
> +mark, make sure that he is onboard with the plan here.
> 
> https://codereview.chromium.org/1311263003/diff/1/DEPS
> File DEPS (right):
> 
> https://codereview.chromium.org/1311263003/diff/1/DEPS#newcode100
> DEPS:100: Var('chromium_git') + '/breakpad/breakpad/src.git' + '@' +
> '00915090d0511189d2d41818cbf617e7cc1426f9', # from svn revision 1495
> At this point the "from svn revision" doesn't make any sense, right?

It's still same svn r1495 commit, just propagated through another set of
mirrors. 

SVN revisions will not make sense when we roll in pure git commit here
(presumably the next roll, since code.google.com becomes readonly very soon...).

[Vadim Sh., 2015-09-01 18:00:51]

vadimsh@chromium.org changed reviewers:
+ mmoss@chromium.org

[Vadim Sh., 2015-09-01 18:00:56]

ping

[Michael Moss, 2015-09-01 18:03:08]

lgtm

[Vadim Sh., 2015-09-01 18:12:41]

The CQ bit was checked by vadimsh@chromium.org

[commit-bot: I haz the power, 2015-09-01 18:13:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1311263003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1311263003/1

[Mark Mentovai, 2015-09-01 19:05:02]

LGTM otherwise

https://codereview.chromium.org/1311263003/diff/1/DEPS
File DEPS (right):

https://codereview.chromium.org/1311263003/diff/1/DEPS#newcode100
DEPS:100: Var('chromium_git') + '/breakpad/breakpad/src.git' + '@' +
'00915090d0511189d2d41818cbf617e7cc1426f9', # from svn revision 1495
Remove “from svn revision”

[Mark Mentovai, 2015-09-01 19:05:16]

What is gclient’s behavior when moving a repository like this?

[Vadim Sh., 2015-09-01 19:06:47]

The CQ bit was unchecked by vadimsh@chromium.org

[Vadim Sh., 2015-09-01 19:09:14]

On 2015/09/01 19:05:16, Mark Mentovai - August is over wrote:
> What is gclient’s behavior when moving a repository like this?

It refetches subrepo from scratch (was fixed by this CL
https://codereview.chromium.org/1303293002, it used to crash before).

[Vadim Sh., 2015-09-01 19:11:39]

https://codereview.chromium.org/1311263003/diff/1/DEPS
File DEPS (right):

https://codereview.chromium.org/1311263003/diff/1/DEPS#newcode100
DEPS:100: Var('chromium_git') + '/breakpad/breakpad/src.git' + '@' +
'00915090d0511189d2d41818cbf617e7cc1426f9', # from svn revision 1495
On 2015/09/01 19:05:02, Mark Mentovai - August is over wrote:
> Remove “from svn revision”

Done.

[Vadim Sh., 2015-09-01 19:11:44]

The CQ bit was checked by vadimsh@chromium.org

[Vadim Sh., 2015-09-01 19:11:44]

The patchset sent to the CQ was uploaded after l-g-t-m from mark@chromium.org,
mmoss@chromium.org
Link to the patchset: https://codereview.chromium.org/1311263003/#ps20001
(title: "remove "from svn revision"")

[commit-bot: I haz the power, 2015-09-01 19:12:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1311263003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1311263003/20001

[commit-bot: I haz the power, 2015-09-01 20:32:06]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-09-01 20:32:33]

Patchset 2 (id:??) landed as
https://crrev.com/121df6f5c96daeeb186ff59eaaff58b1a3397ae7
Cr-Commit-Position: refs/heads/master@{#346724}