Rename tools-webrtc -> tools_webrtc

This aligns with established naming convention for all
other directories.

BUG=webrtc:7593
NOTRY=True
NOTREECHECKS=True
R=ehmaldonado@webrtc.org, mbonadei@webrtc.org
TBR=henrika@webrtc.org

Review-Url: https://codereview.webrtc.org/2864213004 .
Cr-Commit-Position: refs/heads/master@{#18059}

tools_webrtc/download_tools.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+# Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+"""Downloads precompiled tools.
+
+These are checked into the repository as SHA-1 hashes (see *.sha1 files in
+subdirectories). Note that chrome-webrtc-resources is a Google-internal bucket,
+so please download and compile these tools manually if this script fails.
+"""
+
+import os
+import subprocess
+import sys
+
+
+SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
+# Needed to properly resolve PATH and executable extensions on Windows.
+USE_SHELL = sys.platform == 'win32'
+
+
+def main(directories):
+  if not directories:
+    directories = [SCRIPT_DIR]
+
+  for path in directories:
+    cmd = [
+      'download_from_google_storage',
+      '--directory',
+      '--num_threads=10',
+      '--bucket', 'chrome-webrtc-resources',
+      '--auto_platform',
+      '--recursive',
+      path,
+    ]
+    print 'Downloading precompiled tools...'
+    subprocess.check_call(cmd, shell=USE_SHELL)
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))