Put GN object files in subdir based on the label.

Put GN object files in subdir based on the label.

Previously the subdir was based on the output name. These are usually the same but might be different if output_name is overridden, and for libraries on Linux that have a "lib" prefix.

The label name is more unique better matches what one would expect (especiall for the "lib" prefix case). Most importantly, the output name might have spaces which confuses Mac.

BUG=546894
Committed: https://crrev.com/ea6d9154695bb4ce09ae88006d572e0c0e472b23
Cr-Commit-Position: refs/heads/master@{#358925}

[brettw, 2015-11-10 18:44:49]

brettw@chromium.org changed reviewers:
+ andybons@chromium.org

[brettw, 2015-11-10 18:44:50]

Blocked on GN roll: https://codereview.chromium.org/1434783002/

[brettw, 2015-11-10 20:33:53]

The CQ bit was checked by brettw@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-11-10 20:34:32]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1417423007/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1417423007/1

[commit-bot: I haz the power, 2015-11-10 21:11:45]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-11-10 21:11:46]

Dry run: This issue passed the CQ dry run.

[Bons, 2015-11-10 21:57:05]

The CQ bit was checked by andybons@chromium.org

[Bons, 2015-11-10 21:57:05]

lgtm

[commit-bot: I haz the power, 2015-11-10 21:58:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1417423007/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1417423007/1

[commit-bot: I haz the power, 2015-11-10 22:11:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-10 22:11:58]

Patchset 1 (id:??) landed as
https://crrev.com/ea6d9154695bb4ce09ae88006d572e0c0e472b23
Cr-Commit-Position: refs/heads/master@{#358925}