Fix the low battery notification string from mins -> minutes.

Fix the low battery notification string from mins -> minutes.
The previous fix from:
http://src.chromium.org/viewvc/chrome?view=rev&revision=153905
depends on icu formatting function to get the localized time remaining strings. However, the string from icu formatter does not provide the format we want, it uses "mins" instead of "minutes". Hence, revert to use the old ash_string.grd to localize the minute string we prefer, and add a singular minute string.

BUG=157169

[sadrul, 2012-10-24 03:49:06]

http://codereview.chromium.org/11175077/diff/1/chrome/browser/ui/ash/chrome_s...
File chrome/browser/ui/ash/chrome_shell_delegate.cc (left):

http://codereview.chromium.org/11175077/diff/1/chrome/browser/ui/ash/chrome_s...
chrome/browser/ui/ash/chrome_shell_delegate.cc:448: return
TimeFormat::TimeRemaining(delta);
Seeing how complicated the code in TimeFormat is, does it make sense to
introduce TimeRemainingLong instead (I see that there is a TimeRemainingShort)
and keep using the code in TimeFormat?

[jennyz, 2012-10-24 18:42:40]

http://codereview.chromium.org/11175077/diff/1/chrome/browser/ui/ash/chrome_s...
File chrome/browser/ui/ash/chrome_shell_delegate.cc (left):

http://codereview.chromium.org/11175077/diff/1/chrome/browser/ui/ash/chrome_s...
chrome/browser/ui/ash/chrome_shell_delegate.cc:448: return
TimeFormat::TimeRemaining(delta);
On 2012/10/24 03:49:06, sadrul wrote:
> Seeing how complicated the code in TimeFormat is, does it make sense to
> introduce TimeRemainingLong instead (I see that there is a TimeRemainingShort)
> and keep using the code in TimeFormat?
I am discussing the TimeFormat::TimeRemainingLong support with jshin@ who is the
author for TimeFormat code. He is in conference today and will back to me
probably tomorrow.