X87: Stop using HeapType in IC and Crankshaft.

port 119cb566 (r26696).

original commit message:

  Stop using HeapType in IC and Crankshaft

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/958283002

Cr-Commit-Position: refs/heads/master@{#26903}