recipe engine: add tempfile and shutil modules

recipe_modules/shutil/api.py

Index: recipe_modules/shutil/api.py
diff --git a/recipe_modules/shutil/api.py b/recipe_modules/shutil/api.py
new file mode 100644
index 0000000000000000000000000000000000000000..8b86c8782e6346a1671bf4de98047f28e26a7180
--- /dev/null
+++ b/recipe_modules/shutil/api.py
@@ -0,0 +1,17 @@
+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+from recipe_engine import recipe_api
+
+# TODO(phajdan.jr): Move applicable methods from build repo's file module here.
+class ShutilApi(recipe_api.RecipeApi):
+  def rmtree(self, path, **kwargs):
+    self.m.python.inline(
+        'rmtree %s' % path,
+        """
+          import shutil, sys
+          shutil.rmtree(sys.argv[1])
+        """,
+        args=[path],
+        **kwargs)