depot_tools: import bot_update gclient git rietveld tryserver recipe modules (reland #1)

recipe_modules/rietveld/example.py

Index: recipe_modules/rietveld/example.py
diff --git a/recipe_modules/rietveld/example.py b/recipe_modules/rietveld/example.py
new file mode 100644
index 0000000000000000000000000000000000000000..b00cb201a34c580bf2294e2fa319582327e0b72a
--- /dev/null
+++ b/recipe_modules/rietveld/example.py
@@ -0,0 +1,23 @@
+# Copyright 2014 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.
+
+DEPS = [
+  'recipe_engine/path',
+  'recipe_engine/properties',
+  'recipe_engine/step',
+  'rietveld',
+]
+
+def RunSteps(api):
+  api.path['checkout'] = api.path['slave_build']
+  api.rietveld.apply_issue('foo', 'bar', authentication='oauth2')
+  api.rietveld.calculate_issue_root({'project': ['']})
+
+
+def GenTests(api):
+  yield (api.test('basic')
+         + api.properties(issue=1,
+                          patchset=1,
+                          rietveld='http://review_tool.url')
+         )