Fix the issue that certain system captioning fonts are not honored by chrome.

Fix the issue that certain system captioning fonts are not honored by chrome.

Android TypeFace object doesn't provide chrome too much information on font family.
And the font family is needed for blink to override the subtitle css.
This change adds all the font families that are used by the CaptioningManager.

BUG=457850
Committed: https://crrev.com/c2853886b599e6c25b4f565a6c1a1ce9dc8f78ee
Cr-Commit-Position: refs/heads/master@{#330023}

[qinmin, 2015-05-13 20:51:56]

qinmin@chromium.org changed reviewers:
+ dtrainor@chromium.org

[qinmin, 2015-05-13 20:51:57]

qinmin@chromium.org changed reviewers:
+ dtrainor@chromium.org

[qinmin, 2015-05-13 20:51:57]

PTAL

[qinmin, 2015-05-13 20:51:58]

PTAL

[David Trainor- moved to gerrit, 2015-05-14 17:35:22]

lgtm

[qinmin, 2015-05-14 19:55:06]

The CQ bit was checked by qinmin@chromium.org

[commit-bot: I haz the power, 2015-05-14 19:57:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1135583003/1

[commit-bot: I haz the power, 2015-05-14 21:41:44]

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

[commit-bot: I haz the power, 2015-05-14 21:41:48]

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

[qinmin, 2015-05-15 01:15:31]

The CQ bit was checked by qinmin@chromium.org

[qinmin, 2015-05-15 01:15:32]

The patchset sent to the CQ was uploaded after l-g-t-m from
dtrainor@chromium.org
Link to the patchset: https://codereview.chromium.org/1135583003/#ps20001
(title: "fix test on Kitkat")

[commit-bot: I haz the power, 2015-05-15 01:18:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1135583003/20001

[commit-bot: I haz the power, 2015-05-15 02:16:04]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-15 02:16:54]

Patchset 2 (id:??) landed as
https://crrev.com/c2853886b599e6c25b4f565a6c1a1ce9dc8f78ee
Cr-Commit-Position: refs/heads/master@{#330023}