Revert of [screen-orientation] Expose orientation info in OrientationInformation interface. (https://codereview.chromium.org/366853008/)

Reason for revert:
Speculative revert: seems like a cause of Linux_ASAN memory leak after blink roll.

http://build.chromium.org/p/chromium.memory/buildstatus?builder=Linux%20ASan%20LSan%20Tests%20%283%29&number=4884

Original issue's description:
> [screen-orientation] Expose orientation info in OrientationInformation interface.
> 
> BUG=162827
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=177486

TBR=abarth@chromium.org,ch.dumez@samsung.com,mvanouwerkerk@chromium.org,sigbjornf@opera.com,mlamouri@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=162827

Review URL: https://codereview.chromium.org/364253007

git-svn-id: svn://svn.chromium.org/blink/trunk@177542 bbb929c8-8fbe-4397-9dbb-9b2b20218538