Revert "Group SCM-specific functions in classes to simplify generalization of the interface."
Revert "Fix 2 recently introduced errors."
Revert "Fix a variable aliasing error."
Revert "Fix typo."

TBR=dpranke
TEST=none
BUG=none

Review URL: http://codereview.chromium.org/391075

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@32065 0039d316-1c4b-4281-b951-d872f2087c98