add PRESUBMIT for native_client_sdk.

native_client_sdk/PRESUBMIT.py

Index: native_client_sdk/PRESUBMIT.py
diff --git a/native_client_sdk/PRESUBMIT.py b/native_client_sdk/PRESUBMIT.py
new file mode 100644
index 0000000000000000000000000000000000000000..1b711b9d0bb7ebf08bb958a73d696173ccd5d2bc
--- /dev/null
+++ b/native_client_sdk/PRESUBMIT.py
@@ -0,0 +1,46 @@
+# Copyright (c) 2012 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.
+
+"""Top-level presubmit script for isolate.
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
+details on the presubmit API built into gcl.
+"""
+
+
+def CommonChecks(input_api, output_api):
+  output = []
+  disabled_warnings = [
+    'R0401',  # Cyclic import
+    'W0613',  # Unused argument
+    'E1103',  # subprocess.communicate() generates these :(
+  ]
+  black_list = [r'src/site_scons/.*',
+                r'.*/decode_dump.py',
+                r'src/build_tools/build_sdk.py',
+                r'src/build_tools/buildbot_common.py',
+                r'src/build_tools/buildbot_run.py',
+                r'src/build_tools/build_utils.py',
+                r'src/build_tools/build_updater.py',
+                r'src/build_tools/manifest_util.py',
+                r'src/build_tools/nacl*',
+                r'src/build_tools/generate_make.py',
+                r'src/build_tools/sdk_tools/sdk_update_main.py',
+                r'src/build_tools/sdk_tools/sdk_update.py',
+                r'src/project_templates',
+                r'.*/update_manifest.py',
+                r'.*/update_nacl_manifest.py',
+                r'src/build_tools/tests/.*']
+  canned = input_api.canned_checks
+  output.extend(canned.RunPylint(input_api, output_api, black_list=black_list,
+                disabled_warnings=disabled_warnings))
+  return output
+
+
+def CheckChangeOnUpload(input_api, output_api):
+  return CommonChecks(input_api, output_api)
+
+
+def CheckChangeOnCommit(input_api, output_api):
+  return CommonChecks(input_api, output_api)