Revert of [Chromoting] Disable building 64bit chromoting.msi file. (patchset #2 id:60001 of https://codereview.chromium.org/2073943002/ )

Reason for revert:
Breaks the build: https://bugs.chromium.org/p/chromium/issues/detail?id=622443

Original issue's description:
> [Chromoting] Disable building 64bit chromoting.msi file.
>
> A recent bug http://crbug.com/613001 has been reported by AJ, which is due to a
> bad signing parameter we are using. It causes the 64 bit signed MSI file won't
> be able to execute correctly in curtain mode.
> Since we do not release 64bit msi, we should not spend time to build it.
>
> BUG=
>
> Committed: https://crrev.com/b4ed437b70ea66dc21fc7aaf856d9524e24a02b3
> Cr-Commit-Position: refs/heads/master@{#401031}

TBR=joedow@chromium.org,zijiehe@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=
NOTRY=true

Review-Url: https://codereview.chromium.org/2088363002
Cr-Commit-Position: refs/heads/master@{#401487}
2 files changed