Mojo: Add PRESUBMIT.py to mojo/.

mojo/PRESUBMIT.py

Index: mojo/PRESUBMIT.py
diff --git a/mojo/PRESUBMIT.py b/mojo/PRESUBMIT.py
new file mode 100644
index 0000000000000000000000000000000000000000..7f5b503cabf66490ad5bf59674774f082bb4b1e7
--- /dev/null
+++ b/mojo/PRESUBMIT.py
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+# 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.
+
+"""Presubmit script for mojo/embedder.
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details about the presubmit API built into depot_tools.
+"""
+
+import os.path
+
+def CheckChangeOnUpload(input_api, output_api):
+  # Additional python module paths (we're in src/mojo/); not everyone needs
+  # them, but it's easiest to add them to everyone's path.
+  # For ply and jinja2:
+  third_party_path = os.path.join(
+      input_api.PresubmitLocalPath(), "..", "third_party")
+  # For the bindings generator:
+  mojo_public_bindings_pylib_path = os.path.join(
+      input_api.PresubmitLocalPath(), "public", "tools", "bindings", "pylib")
+  # TODO(vtl): Don't lint these files until the (many) problems are fixed
+  # (possibly by deleting/rewriting some files).
+  temporary_black_list = input_api.DEFAULT_BLACK_LIST + \
+      (r".*\bpublic[\\\/]tools[\\\/]bindings[\\\/]pylib[\\\/]mojom[\\\/]"
+           r"generate[\\\/].+\.py$",
+       r".*\bpublic[\\\/]tools[\\\/]bindings[\\\/]generators[\\\/].+\.py$",
+       r".*\bspy[\\\/]ui[\\\/].+\.py$",
+       r".*\btools[\\\/]pylib[\\\/]transitive_hash\.py$",
+       r".*\btools[\\\/]test_runner\.py$")
+
+  results = []
+  pylint_extra_paths = [third_party_path, mojo_public_bindings_pylib_path]
+  results += input_api.canned_checks.RunPylint(
+      input_api, output_api, extra_paths_list=pylint_extra_paths,
+      black_list=temporary_black_list)
+  return results