Fix test for libudev1

Fix test for libudev1

The test for libudev1/libudev0 fails when an sdk has installed
a dependency on libudev1, which will go away on recompile, on
a system with only libudev0.  The dependency created an empty
virtual package that passes the "show" test, but cannot be installed.

BUG=243398
TEST=local

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=202021

[Peter Mayo, 2013-05-23 20:42:13]

This fixes my use of the simplechrome workflow for ChromiumOS.

[Paweł Hajdan Jr., 2013-05-23 21:25:48]

LGTM

[commit-bot: I haz the power, 2013-05-23 22:35:01]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/petermayo@chromium.org/15911004/1

[haltonhuo, 2013-05-24 01:49:57]

On 2013/05/23 20:42:13, Peter Mayo wrote:
> This fixes my use of the simplechrome workflow for ChromiumOS.

If try to fix libudev issue, why not fix other pkgs like mscorefonts, nspr, nss
and libjpeg?

[Peter Mayo, 2013-05-24 02:15:16]

On 2013/05/24 01:49:57, haltonhuo wrote:
> On 2013/05/23 20:42:13, Peter Mayo wrote:
> > This fixes my use of the simplechrome workflow for ChromiumOS.
> 
> If try to fix libudev issue, why not fix other pkgs like mscorefonts, nspr,
nss
> and libjpeg?

I didn't run into a problem with them only existing virtually.  Can they suffer
the same fate?  If so I'll follow up with the rest, refactored to be neater.

[haltonhuo, 2013-05-24 02:35:54]

On 2013/05/24 02:15:16, Peter Mayo wrote:
> I didn't run into a problem with them only existing virtually.  Can they
suffer
> the same fate?  If so I'll follow up with the rest, refactored to be neater.

I did not either. Maybe only libudev1 is the case that a dependency made "show"
libudev1 pass. If so, I'm good.

[commit-bot: I haz the power, 2013-05-24 07:59:52]

Change committed as 202021