content: Make ui/events dependency unconditional

content: Make ui/events dependency unconditional

It is not used only when toolkit_views is enabled. This fixes some
unresolved reference errors that will break the linux_ecs_ozone trybot
once we enable -Wl,-z,defs.

This dependency is already unconditional in the GN build.

BUG=445627
TEST=linux_ecs_ozone tryjob

Committed: https://crrev.com/60d02cca7a5e75454217e397907606d2a1d46a6d
Cr-Commit-Position: refs/heads/master@{#314919}

[spang, 2015-02-05 21:28:32]

spang@chromium.org changed reviewers:
+ creis@chromium.org

[Charlie Reis, 2015-02-05 21:45:59]

Rubber stamp LGTM.

[spang, 2015-02-05 22:03:10]

The CQ bit was checked by spang@chromium.org

[commit-bot: I haz the power, 2015-02-05 22:03:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/874163004/1

[commit-bot: I haz the power, 2015-02-05 23:25:05]

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

[commit-bot: I haz the power, 2015-02-05 23:25:06]

Try jobs failed on following builders:
  mac_chromium_rel_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[spang, 2015-02-05 23:25:55]

The CQ bit was checked by spang@chromium.org

[commit-bot: I haz the power, 2015-02-05 23:26:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/874163004/1

[commit-bot: I haz the power, 2015-02-06 00:05:43]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-06 00:06:37]

Patchset 1 (id:??) landed as
https://crrev.com/60d02cca7a5e75454217e397907606d2a1d46a6d
Cr-Commit-Position: refs/heads/master@{#314919}