Revert of [Chromoting] Remove wildcard ('*') from remoting_all target.

Revert of [Chromoting] Remove wildcard ('*') from remoting_all target. (patchset #8 id:140001 of https://codereview.chromium.org/896743004/)

Reason for revert:
It cause ChromiumOS.Chromium and PFQ bots to fail. The reason might because chroot didn't have "dpkg-architecture" command. The correct solution might be add "dpkg-architecture" command to chroot. But this CL currently break PFQ and a bunch of bots. So revert it for immediate fix.
See crbug.com/456491

Original issue's description:
> [Chromoting] Remove wildcard ('*') from remoting_all target.
>
> Support for the wildcard is going away in GN, so this helps prepare for the transition away from GYP.
>
> This cl adds dummy targets so that that logic for when the proper targets should be build can be kept in the platform-specific files.
>
> Some of the conditions in the host gyp files needed to be restructured so that the dummy targets would be defined only when necessary.  The updated conditions caused a lot of lines to be re-indented, but the target definitions are the same (except for the new dummy targets).
>
> BUG=
>
> Committed: https://crrev.com/9fb75ed89c0ae4ced679576f9cf030cc8c30e928
> Cr-Commit-Position: refs/heads/master@{#315150}

TBR=kelvinp@chromium.org,garykac@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/c29be3bc08f24d515d07547570e5d0d7f1a10ff3
Cr-Commit-Position: refs/heads/master@{#315261}

[bshe, 2015-02-09 03:23:37]

Created Revert of [Chromoting] Remove wildcard ('*') from remoting_all target.

[commit-bot: I haz the power, 2015-02-09 03:23:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/905223002/1

[commit-bot: I haz the power, 2015-02-09 03:24:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-09 03:24:47]

Patchset 1 (id:??) landed as
https://crrev.com/c29be3bc08f24d515d07547570e5d0d7f1a10ff3
Cr-Commit-Position: refs/heads/master@{#315261}

[vapier, 2015-02-09 14:33:27]

vapier@chromium.org changed reviewers:
+ vapier@chromium.org

[vapier, 2015-02-09 14:33:28]

fwiw, i don't think adding dpkg-architecture is reasonable.  the build system
shouldn't require Debian tools.

[kelvinp, 2015-02-09 21:37:24]

On 2015/02/09 14:33:28, vapier wrote:
> fwiw, i don't think adding dpkg-architecture is reasonable.  the build system
> shouldn't require Debian tools.

Looks like after the CL, we are building the host installer on Chrome-OS, which
we shouldn't need to.
I can take a look.