Merge 229567 "android: fix base::Time::FromLocalExploded() crash."

Merge 229567 "android: fix base::Time::FromLocalExploded() crash."

> android: fix base::Time::FromLocalExploded() crash.
> 
> This patch does the following:
> 
> - Provide a work-around for an Android platform bug that
>   happens on older Android releases (e.g. 4.1.2), but fixed
>   on later ones (e.g. 4.3), where mktime() / mktime64()
>   would return -1 even when passed proper time values.
> 
> - Improve the code to properly deal with the fact that
>   SysTime is actually int64 on Android, unlike other
>   platforms, allowing us to remove the CHECK() that
>   was triggered by the platform bug.
> 
> - Add a new unit test to verify that the new code
>   doesn't crash on Android 4.1.2 anymore, and returns
>   the correct values.
> 
> BUG=287821
> R=jar@chromium.org,mark@chromium.org,brettw@chromium.org
> 
> Review URL: https://codereview.chromium.org/27472003

TBR=digit@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=229824

[kerz_chromium, 2013-10-21 16:20:24]

Committed patchset #1 manually as r229824.