[Mac/GN] Make //components/crash/core/common a static_library.

[Mac/GN] Make //components/crash/core/common a static_library.

On Mac, if it is a source_set, error messages like this will be printed, since
the .o file ends up in multiple targets:

objc[56710]: Class CrZombie is implemented in both /Volumes/Build/src/out/shared/./libsessions.dylib and
    /Volumes/Build/src/out/shared/libchrome_dll.dylib. One of the two will be used.
    Which one is undefined.

BUG=611894
R=mark@chromium.org

Committed: https://crrev.com/73d41be15a231987117bd4e932219de569f37a9c
Cr-Commit-Position: refs/heads/master@{#399922}

[Mark Mentovai, 2016-06-15 15:43:34]

LGTM

Yeah…

[Robert Sesek, 2016-06-15 15:44:01]

The CQ bit was checked by rsesek@chromium.org

[commit-bot: I haz the power, 2016-06-15 15:44:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2069543006/1

[commit-bot: I haz the power, 2016-06-15 16:34:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-15 16:36:38]

Description was changed from

==========
[Mac/GN] Make //components/crash/core/common a static_library.

On Mac, if it is a source_set, error messages like this will be printed, since
the .o file ends up in multiple targets:

objc[56710]: Class CrZombie is implemented in both
/Volumes/Build/src/out/shared/./libsessions.dylib and
    /Volumes/Build/src/out/shared/libchrome_dll.dylib. One of the two will be
used.
    Which one is undefined.

BUG=611894
R=mark@chromium.org
==========

to

==========
[Mac/GN] Make //components/crash/core/common a static_library.

On Mac, if it is a source_set, error messages like this will be printed, since
the .o file ends up in multiple targets:

objc[56710]: Class CrZombie is implemented in both
/Volumes/Build/src/out/shared/./libsessions.dylib and
    /Volumes/Build/src/out/shared/libchrome_dll.dylib. One of the two will be
used.
    Which one is undefined.

BUG=611894
R=mark@chromium.org

Committed: https://crrev.com/73d41be15a231987117bd4e932219de569f37a9c
Cr-Commit-Position: refs/heads/master@{#399922}
==========

[commit-bot: I haz the power, 2016-06-15 16:36:39]

Patchset 1 (id:??) landed as
https://crrev.com/73d41be15a231987117bd4e932219de569f37a9c
Cr-Commit-Position: refs/heads/master@{#399922}