Add Paths as first-class types in configs.

scripts/slave/recipe_modules/gclient/api.py

Index: scripts/slave/recipe_modules/gclient/api.py
diff --git a/scripts/slave/recipe_modules/gclient/api.py b/scripts/slave/recipe_modules/gclient/api.py
index e9f6621ea15ad18ea33186ab4d9cc0a369a058b5..78ae6117323af1553ff115cb252e29e4635aec47 100644
--- a/scripts/slave/recipe_modules/gclient/api.py
+++ b/scripts/slave/recipe_modules/gclient/api.py
@@ -146,17 +146,10 @@ class GclientApi(recipe_api.RecipeApi):
         steps.append(self(name, ['recurse', 'git', 'config', var, val],
                           **kwargs))
 
-    cwd = kwargs.get('cwd')
-    for c in cfg.checkouts:
-      path = self.m.path.slave_build(c)
-      if cwd:
-        path = self.m.path.join(cwd, c)
-      self.m.path.add_checkout(path)
-    for s in cfg.solutions:
-      path = self.m.path.slave_build(s.name)
-      if cwd:
-        path = self.m.path.join(cwd, s.name)
-      self.m.path.add_checkout(path)
+    cwd = kwargs.get('cwd', self.m.path.slave_build)
+    self.m.path.set_dynamic_path(
+      'checkout', cwd(*cfg.solutions[0].name.split(self.m.path.sep)),

[agable, 2013/09/26 21:46:02]

So we've lost the ability to save multiple paths into path.checkout and then
select one later. I guess this is mitigated by the json output from gclient
being in step_history, but double check it hasn't negatively affected anyone.

[iannucci, 2013/09/27 02:08:20]

I converted the users of this feature over. It was dumb anyway, since in order
to select the checkout, you needed to know what the path to it was.

+      default=True)
 
     return steps