Revert of Enable the volume slider in Ash for windows. (https://codereview.chromium.org/178883004/)

Reason for revert:
Experimentally reverting this CL because it may have broken AshTestHelperTest.AshTestHelper on Windows Vista . Will revert the revert if this CL is innocent

See http://build.chromium.org/p/chromium.win/builders/Vista%20Tests%20%282%29/builds/41640/steps/ash_unittests/logs/AshTestHelper

Original issue's description:
> Enable the volume slider in Ash for windows.
> 
> BUG=227247
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=255215

TBR=henrika@chromium.org,tommi@chromium.org,jennyz@chromium.org,dewittj@chromium.org,zturner@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=227247

Review URL: https://codereview.chromium.org/188693004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255363 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255363