Re-enable StackContainer.BufferAlignment test on android.

Re-enable StackContainer.BufferAlignment test on android.

Now that http://crbug.com/115612 has been fixed this test
should not need to be disabled anymore.

BUG=115612
TEST=android trybots


Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=178021

[Hao Zheng, 2013-01-17 02:56:45]

lgtm

lgtm, but I'm not reviewer.

[Sam Clegg, 2013-01-17 18:53:52]

On 2013/01/17 02:56:45, Hao Zheng wrote:
> lgtm
> 
> lgtm, but I'm not reviewer.

+ilevy.  Would you mind take look at this isaac, I found your name in 
the history of this area.

[Torne, 2013-01-18 22:20:16]

lgtm

[commit-bot: I haz the power, 2013-01-18 22:23:12]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sbc@chromium.org/11946018/1

[commit-bot: I haz the power, 2013-01-18 22:49:58]

Sorry for I got bad news for ya.
Compile failed with a clobber build on linux_aura.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_aura...
Your code is likely broken or HEAD is junk. Please ensure your
code is not broken then alert the build sheriffs.
Look at the try server FAQ for more details.

[commit-bot: I haz the power, 2013-01-22 15:54:56]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sbc@chromium.org/11946018/1

[commit-bot: I haz the power, 2013-01-22 17:02:12]

Change committed as 178021