Revert 248720 "Add New Histogram Stats to see where Blacklist Fa..."

> Add New Histogram Stats to see where Blacklist Failures are Occuring
> 
> We seem to be seeing more setup failures than expected so add so new
> UMA stats to try and narrow down where the problem is occuring.
> 
> (This crashes would occur before breakpad is loaded so we don't have
> any other way to gather this data for the moment).
> 
> NOTRY=True
> BUG=329023
> 
> Review URL: https://codereview.chromium.org/147143002

TBR=csharp@chromium.org

Review URL: https://codereview.chromium.org/156053003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249079 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249079