Since the wire bytes are now stored on the C++ heap, referenced
directly from the {NativeModule}, there is no need any more for the
additional copy in the {CompilationState}.

R=mstarzinger@chromium.org

Bug: v8:7868
Change-Id: I3ca25981b37bc14037a83a199354b70b4e52f8c7
Reviewed-on: https://chromium-review.googlesource.com/1118886
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54107}