Removing GetDefaultProfile

BUG=322682
TEST=browsertest

Review URL: https://codereview.chromium.org/107483006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241417 0039d316-1c4b-4281-b951-d872f2087c98
[cr tool] Change client scanning to override the environment

BUG=327668

Review URL: https://codereview.chromium.org/112573003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241418 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241418