Changing underlay to be #/ relative.
Changing underlay to be #/ relative.

When chrome_root.scons moves into the chrome tree,
we would like it to be a straight move.
Making it position independent.

BUG=None
TEST=None
R=ncbray@google.com

Review URL: https://chromiumcodereview.appspot.com/10916068

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@9619 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client