Revert of [Android] Fix a flicker in stopping Chrome

Revert of [Android] Fix a flicker in stopping Chrome (patchset #11 id:200001 of https://codereview.chromium.org/843883002/)

Reason for revert:
Caused regression with lockscreen battery consumption.

Original issue's description:
> [Android] Fix a flicker in stopping Chrome
>
> Currently, we draw a blank frame as we release resources in onStop().
> This can be prevented if we hide the tab when the window gets hidden instead of
> on activity stop.
>
> BUG=434401
>
> Committed: https://crrev.com/e4b1990c9d49fd9734940fa863513ad43b82c6e7
> Cr-Commit-Position: refs/heads/master@{#311809}

TBR=tedchoc@chromium.org,dtrainor@chromium.org,yusufo@chromium.org,aelias@chromium.org,sievers@chromium.org,changwan@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=434401
Committed: https://crrev.com/e278dc74a72b863889e17ea110516fb028fe5d47
Cr-Commit-Position: refs/heads/master@{#319713}

[jdduke (slow), 2015-03-09 19:33:37]

Created Revert of [Android] Fix a flicker in stopping Chrome

[no sievers, 2015-03-09 19:38:58]

lgtm

[jdduke (slow), 2015-03-09 19:43:17]

The CQ bit was checked by jdduke@chromium.org

[jdduke (slow), 2015-03-09 19:43:18]

The patchset sent to the CQ was uploaded after l-g-t-m from sievers@chromium.org
Link to the patchset: https://codereview.chromium.org/990183004/#ps170001
(title: "REbase")

[commit-bot: I haz the power, 2015-03-09 19:44:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/990183004/170001

[commit-bot: I haz the power, 2015-03-09 19:45:31]

Committed patchset #2 (id:170001)

[jdduke (slow), 2015-03-09 19:46:09]

On 2015/03/09 19:45:31, I haz the power (commit-bot) wrote:
> Committed patchset #2 (id:170001)

I did not mean to NOTRY that, sigh...

[commit-bot: I haz the power, 2015-03-09 19:46:11]

Patchset 2 (id:??) landed as
https://crrev.com/e278dc74a72b863889e17ea110516fb028fe5d47
Cr-Commit-Position: refs/heads/master@{#319713}