Refactor the way that TestApi works so that it is actually useful.

scripts/slave/recipe_modules/chromium_android/api.py

Index: scripts/slave/recipe_modules/chromium_android/api.py
diff --git a/scripts/slave/recipe_modules/chromium_android/api.py b/scripts/slave/recipe_modules/chromium_android/api.py
index 8166eb34c2386148cfb74d3d85dc59bbdcf74545..172d98c35728ccc2385448d355f9abee26dc9b9d 100644
--- a/scripts/slave/recipe_modules/chromium_android/api.py
+++ b/scripts/slave/recipe_modules/chromium_android/api.py
@@ -33,7 +33,6 @@ class AndroidApi(recipe_api.RecipeApi):
     s = spec.solutions[0]
     s.name = repo_name
     s.url = repo_url
-    s.custom_vars = self.c.custom_vars
     s.custom_deps = gclient_custom_deps or {}
     if revision:
       s.revision = revision
@@ -124,7 +123,7 @@ class AndroidApi(recipe_api.RecipeApi):
     # TODO(sivachandra): Disable subannottations after cleaning up
     # tree_truth.sh.
     yield self.m.step('Tree Truth Steps',
-                      [self.m.path.checkout('build', 'tree_truth.sh'), 
+                      [self.m.path.checkout('build', 'tree_truth.sh'),
                        self.m.path.checkout()] + repos,
                       allow_subannottations=True)
 
@@ -141,7 +140,7 @@ class AndroidApi(recipe_api.RecipeApi):
           ['-b',
            self.m.path.checkout(self.internal_dir, 'bin', 'findbugs_filter'),
            '-o', 'com.google.android.apps.chrome.-,org.chromium.-'])
-           
+
       return self.m.step('findbugs_internal', cmd, env=self.env)
 
   def checkdeps(self):