-Fixed regression in S15.5.5.1_A5.js.  I eliminated the fast case check in ToPrimitive.
-Fixed regression in S15.5.5.1_A5.js.
 I eliminated the fast case check in ToPrimitive.

Review URL: http://codereview.chromium.org/6534

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@461 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh