Address NewApi lint warnings in src/printing.

Address NewApi lint warnings in src/printing.

These are all false positives. We just need to mark several classes
with @TargetApi(KitKat) since printing is only used on KitKat+.

BUG=411461
Committed: https://crrev.com/04a35e18e9bc841122ce04d26a718cd5d5f8460c
Cr-Commit-Position: refs/heads/master@{#319467}

[newt (away), 2015-03-04 01:56:20]

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

[newt (away), 2015-03-04 01:56:21]

PTAL

[newt (away), 2015-03-05 23:05:12]

friendly ping?

[whywhat, 2015-03-06 17:24:02]

lgtm

+Nicolas FYI

[newt (away), 2015-03-06 17:25:53]

The CQ bit was checked by newt@chromium.org

[commit-bot: I haz the power, 2015-03-06 17:27:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/980473002/1

[commit-bot: I haz the power, 2015-03-06 18:36:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-06 18:37:15]

Patchset 1 (id:??) landed as
https://crrev.com/04a35e18e9bc841122ce04d26a718cd5d5f8460c
Cr-Commit-Position: refs/heads/master@{#319467}