Make blink_trybot recipe work on windows

scripts/slave/recipe_modules/python/api.py

+# Copyright 2013 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 slave import recipe_api
+
+class PythonApi(recipe_api.RecipeApi):
+  def __call__(self, name, script, args=None, unbuffered=True, **kwargs):
+    """Return a step to run a python script with arguments."""
+    cmd = ['python']
+    if unbuffered:
+      cmd.append('-u')
+    cmd.append(script)
+    return self.m.step(name, cmd + list(args or []), **kwargs)
+
+  def inline(self, name, program, **kwargs):
+    """Run an inline python program as a step.
+
+    Program is output to a temp file and run when this step executes.
+    """
+    return self(name, recipe_api.InputDataPlaceholder(program, '.py'), **kwargs)