Add linebreaks to --trace-codegen output.

Add linebreaks to --trace-codegen output.

R=rmcilroy@chromium.org

Committed: https://crrev.com/9390b9b535f2d983fb04b7dfe4a8353f7c7eda7c
Cr-Commit-Position: refs/heads/master@{#31564}

[Yang, 2015-10-26 12:33:27]

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

[commit-bot: I haz the power, 2015-10-26 12:33:36]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1415253006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1415253006/1

[rmcilroy, 2015-10-26 12:35:27]

lgtm

[commit-bot: I haz the power, 2015-10-26 13:18:44]

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

[commit-bot: I haz the power, 2015-10-26 13:18:45]

Dry run: This issue passed the CQ dry run.

[Yang, 2015-10-26 13:39:14]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2015-10-26 13:39:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1415253006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1415253006/1

[commit-bot: I haz the power, 2015-10-26 13:41:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-26 13:41:36]

Patchset 1 (id:??) landed as
https://crrev.com/9390b9b535f2d983fb04b7dfe4a8353f7c7eda7c
Cr-Commit-Position: refs/heads/master@{#31564}