Re-enable NewApi Android lint warning.

Re-enable NewApi Android lint warning.

The NewApi warning complains when we use APIs added to Android after ICS
because these will causes crashes on older versions of Android. This
reenables this helpful warning and whitelists the files that currently
trigger the warning. Follow-up CLs will fix these whitelisted warnings
(i.e. by fixing the code if it's broken, or adding the @TargetApi
annotation)

BUG=266140
R=aurimas@chromium.org

Committed: https://chromium.googlesource.com/chromium/src/+/a928808ec67f1ddf41ba0643eec2611c9e6e4620

[newt (away), 2015-03-02 23:38:00]

newt@chromium.org changed reviewers:
+ aurimas@chromium.org

[newt (away), 2015-03-02 23:38:01]

PTAL

[aurimas (slooooooooow), 2015-03-03 00:25:16]

lgtm

[newt (away), 2015-03-03 00:57:03]

The CQ bit was checked by newt@chromium.org

[commit-bot: I haz the power, 2015-03-03 00:58:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/969213002/1

[commit-bot: I haz the power, 2015-03-03 08:53:33]

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

[commit-bot: I haz the power, 2015-03-03 08:53:34]

Try jobs failed on following builders:
  android_rel_tests_recipe on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_rel_tes...)

[commit-bot: I haz the power, 2015-03-03 21:28:11]

Patchset 1 (id:??) landed as
https://crrev.com/a928808ec67f1ddf41ba0643eec2611c9e6e4620
Cr-Commit-Position: refs/heads/master@{#318942}

[newt (away), 2015-03-03 21:28:23]

Committed patchset #1 (id:1) manually as
a928808ec67f1ddf41ba0643eec2611c9e6e4620 (presubmit successful).