Revert 217247 "Whitelist TimeScapes to access restricted native ..."

Revert 217247 "Whitelist TimeScapes to access restricted native ..."

> Whitelist TimeScapes to access restricted native local filesystem.
> 
> Recently, access to oem data has been disabled by default, and it is enabled only for Files.app. However, TimeScapes is an external extension and lost ability to play the movie which is in the oem directory. This patch temporarily whitelists TimeScapes to let it access the video.
> Note, that this is just a temporary solution, and we should either restore access to read only native file systems to everyone, or grant it to TimeScapes in a proper way.
> 
> TEST=TimeScapes should play correctly in M-30.
> BUG=262265
> 
> Review URL: https://chromiumcodereview.appspot.com/23011002

TBR=mtomasz@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=217737

[mtomasz, 2013-08-15 03:59:48]

Committed patchset #1 manually as r217737.