Bring some OOP and sanity to gclient.py.

gclient_utils.py

Index: gclient_utils.py
diff --git a/gclient_utils.py b/gclient_utils.py
index 54910ce45a2cfd482955e1cad31c70ec6a846d18..5fd2ef27a7f9fc7da14ca6683792d233574c482c 100644
--- a/gclient_utils.py
+++ b/gclient_utils.py
@@ -310,14 +310,6 @@ def SubprocessCallAndFilter(command,
     raise Error(msg)
 
 
-def IsUsingGit(root, paths):
-  """Returns True if we're using git to manage any of our checkouts.
-  |entries| is a list of paths to check."""
-  for path in paths:
-    if os.path.exists(os.path.join(root, path, '.git')):
-      return True
-  return False
-
 def FindGclientRoot(from_dir, filename='.gclient'):
   """Tries to find the gclient root."""
   path = os.path.realpath(from_dir)