Original commit message:

  Also, CodeGenerator::MakeCodeEpilogue now accepts an optional pointer
  to a EhFrameWriter and will attach unwinding information to the code
  object when passed one.

Reason for reverting:

  The STATIC_CONST_MEMBER_DEFINITION in eh-frame-writer-unittest.cc
  causes a compiler error on V8 Win64 - clang buildbot.

  Removing that bit.

BUG=v8:4899
LOG=N

Review-Url: https://codereview.chromium.org/2023503002
Cr-Commit-Position: refs/heads/master@{#37707}