Revert 284832 because it broke Android Tests with the following error:

Revert 284832 because it broke Android Tests with the following error: 

  FindAllAvailableBrowsers at tools/telemetry/telemetry/core/backends/chrome/android_browser_finder.py:224
      proc.set_cpu_affinity([0])  # Older versions.
  AttributeError: 'Process' object has no attribute 'set_cpu_affinity'

> Reland: [Telemetry] Fix a flake in android browser finder.
> 
> This is the same as before, except that we now support older and newer versions
> of psutil.
> 
> BUG=395228
> 
> patch from issue 394423002
> 
> Review URL: https://codereview.chromium.org/407253002

TBR=tonyg@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284848

[sadrul, 2014-07-23 04:19:04]

Committed patchset #1 manually as r284848 (tree was closed).