Have compositor_model_bench target near its source files.

Have compositor_model_bench target near its source files.

It is more traditional (and recommended) to have GN targets closer to the source
files it builds.

BUG=432959
TEST=gn gen out-gn && ninja -C out-gn compositor_model_bench
R=sievers@chromium.org, dpranke@chromium.org

Committed: https://crrev.com/8944e6f2b74d80aba842b29e41de404f1ad2efab
Cr-Commit-Position: refs/heads/master@{#322226}

[tfarina, 2015-03-25 15:58:45]

tfarina@chromium.org changed reviewers:
+ dpranke@chromium.org

[tfarina, 2015-03-25 15:59:26]

Dirk -> https://codereview.chromium.org/1032193002/diff/1/BUILD.gn

Daniel -> gpu

PTAL

[no sievers, 2015-03-25 16:59:02]

lgtm

[Dirk Pranke, 2015-03-25 17:03:37]

lgtm

[tfarina, 2015-03-25 20:02:29]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2015-03-25 20:02:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1032193002/1

[commit-bot: I haz the power, 2015-03-25 20:07:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-25 20:08:05]

Patchset 1 (id:??) landed as
https://crrev.com/8944e6f2b74d80aba842b29e41de404f1ad2efab
Cr-Commit-Position: refs/heads/master@{#322226}