Disable audio_decoder_unittests on Win x64 in code.

Having this failing test being disabled in code will make it
possible to add it on the bots again, and make thus no bot
configuration update needs to be communicated when it's fixed.

BUG=1459
TEST=Compiled with GYP_DEFINES=target_arch=x64 and ran the
test successsfully on Windows. Also ran regular trybots.

R=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1594004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4164 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed