Port 7a82be3d

Original commit message:

    The duplicated enum values are only used by the FastNewClosureStub,
    so inline them there, with the help of one new constant (kFunctionKindShift)
    in SharedFunctionInfo.

R=adamk@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, bjaideep@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2391343003
Cr-Commit-Position: refs/heads/master@{#40017}