Port 4acca53e

Original commit message:
    There's actually no point trying to do Function.prototype.toString in
    JavaScript, as it always calls into C++ at least once, so it only
    complicates things (esp. once we start optimizing bound functions).

    Drive-by-fix: Rename FunctionApply and FunctionCall builtins to also
    reflect the fact that these are builtins in the Function.prototype and
    not on Function itself.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=chromium:535408
LOG=n

Review URL: https://codereview.chromium.org/1544833002

Cr-Commit-Position: refs/heads/master@{#33014}