Port the fast path for accessor inlining to cached property names from
Crankshaft to TurboFan. This constant-folds accesses to document in a
script.

R=jochen@chromium.org
BUG=v8:5548

Review-Url: https://codereview.chromium.org/2646363003
Cr-Commit-Position: refs/heads/master@{#42600}