Revert of Android Media Notification: remove "Touch to return" text.

Revert of Android Media Notification: remove "Touch to return" text. (patchset #1 id:1 of https://codereview.chromium.org/1326163002/ )

Reason for revert:
This breaks the downstream test HostDriven_SigninTest.testManagedSignin.

Original issue's description:
> Android Media Notification: remove "Touch to return" text.
>
> The notification only shows the origin. Touching the notification to
> return to the playing application is a very common pattern on Android.
> It is not required for us to reinforce it with text, making the
> notification less appealing.
>
> BUG=528202
>
> Committed: https://crrev.com/ded797a710c1a07b06f8d84d697c54671a942b35
> Cr-Commit-Position: refs/heads/master@{#347377}

TBR=avayvod@chromium.org,ianwen@chromium.org,mlamouri@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=528202
Committed: https://crrev.com/2fa386cfd0174b20b8ec67c3e3a2503ef479bd3a
Cr-Commit-Position: refs/heads/master@{#347533}

[nyquist, 2015-09-04 23:41:31]

Created Revert of Android Media Notification: remove "Touch to return" text.

[commit-bot: I haz the power, 2015-09-04 23:42:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1307093008/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1307093008/1

[commit-bot: I haz the power, 2015-09-04 23:43:24]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-04 23:44:02]

Patchset 1 (id:??) landed as
https://crrev.com/2fa386cfd0174b20b8ec67c3e3a2503ef479bd3a
Cr-Commit-Position: refs/heads/master@{#347533}

[mlamouri (slow - plz ping), 2015-09-05 14:55:07]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1306123010/ by mlamouri@chromium.org.

The reason for reverting is: Wrongful conviction..