Fall back to the nacl attribute when we're registered to render another MIME type.  We can't use the src attribute in this case because the src attribute is used to give us (really the NEXE) the resource we're supposed to render. Review URL: http://codereview.chromium.org/7014008
Fall back to the nacl attribute when we're registered to render another MIME
type.  We can't use the src attribute in this case because the src attribute is
used to give us (really the NEXE) the resource we're supposed to render.
Review URL: http://codereview.chromium.org/7014008

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@5274 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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