Fix some GN component build issues.

Fix some GN component build issues.

This fixes some files not compiling with the proper flags for component mode.

The device_event_log target in GN is a source set in GN and a component in GYP. This difference was causing some errors. I changed this to be a static library in GYP. It only has 2 files in it so making a whole shared library for this target seems wasteful.

Committed: https://crrev.com/8f2fd17e33f365c1a73dd25aa33a3a2877d0c1d5
Cr-Commit-Position: refs/heads/master@{#320805}

[brettw, 2015-03-16 19:42:45]

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

[scottmg, 2015-03-16 20:33:07]

lgtm

[brettw, 2015-03-16 21:17:37]

The CQ bit was checked by brettw@chromium.org

[commit-bot: I haz the power, 2015-03-16 21:18:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1011823002/40001

[commit-bot: I haz the power, 2015-03-16 22:14:24]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-03-16 22:15:19]

Patchset 3 (id:??) landed as
https://crrev.com/8f2fd17e33f365c1a73dd25aa33a3a2877d0c1d5
Cr-Commit-Position: refs/heads/master@{#320805}