The bits in CompilerHints are accessed via FunctionKindBits, and on the other
hand, with accessors defined by BOOL_ACCESSORS(SharedFunctionInfo,
compiler_hints, is_accessor_function, kIsAccessorFunction) etc.

So the bit order in FunctionKind must match CompilerHints.

This is not causing problems (yet) because there's no accessor for these two
bits, but if somebody adds one, things will go wrong.

R=dslomov@chromium.org
BUG=

Review URL: https://codereview.chromium.org/988413002

Cr-Commit-Position: refs/heads/master@{#27096}