Revert 194441 "Better support for chrome for cros local builds."

Revert 194441 "Better support for chrome for cros local builds."

The Perf Blink bots are failing with the following error:

File "/b/build/slave/Linux_Perf/build/src/tools/telemetry/telemetry/core/chrome/desktop_browser_finder.py", line 129, in AddCrOSIfFound
    ldd_out = subprocess.check_output([ldd_path, app])
AttributeError: 'module' object has no attribute 'check_output'

> Better support for chrome for cros local builds.
> 
> * Use ldd to detect chrome for cros local builds.
> * Add browser types debug-cros and release-cros for chrome for cros on linux.
> * Remove browser option --cros-desktop
> 
> BUG=229692
> TEST=run_tests works with cros-debug going through the login flow.
> NOTRY=True
> Review URL: https://codereview.chromium.org/14102002

TBR=achuith@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=194466

[Julien - ping for review, 2013-04-16 22:19:31]

Committed patchset #1 manually as r194466.

[achuithb, 2013-04-17 19:09:02]

lgtm