Revert 227565 "Enable EncryptedMediaTest (in content_browsertest..."

> Enable EncryptedMediaTest (in content_browsertests) on Android.
> 
> Encrytped media playback with <video src=...> is not supported on Android. Those
> tests will not run on Android.
> 
> BUG=304956,300035
> TEST=This CL enables tests which was previously disabled.
> 
> Review URL: https://codereview.chromium.org/26243003

TBR=xhwang@chromium.org

Review URL: https://codereview.chromium.org/26565003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227627 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227627