Do not autoroll gradle and roll gradle back to 3.5.0.

tools_webrtc/autoroller/roll_deps.py

 #!/usr/bin/env python
 # Copyright (c) 2015 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.
 
 """Script to automatically roll dependencies in the WebRTC DEPS file."""
 
 import argparse
 import base64
 import collections
 import logging
 import os
 import re
 import subprocess
 import sys
 import urllib
 
 
 # Skip these dependencies (list without solution name prefix).
 DONT_AUTOROLL_THESE = [
   'src/third_party/gflags/src',
   'src/third_party/winsdk_samples',
+  'src/webrtc/examples/androidtests/third_party/gradle',
 ]
 
 WEBRTC_URL = 'https://chromium.googlesource.com/external/webrtc'
 CHROMIUM_SRC_URL = 'https://chromium.googlesource.com/chromium/src'
 CHROMIUM_COMMIT_TEMPLATE = CHROMIUM_SRC_URL + '/+/%s'
 CHROMIUM_LOG_TEMPLATE = CHROMIUM_SRC_URL + '/+log/%s'
 CHROMIUM_FILE_TEMPLATE = CHROMIUM_SRC_URL + '/+/%s/%s'
 
 COMMIT_POSITION_RE = re.compile('^Cr-Commit-Position: .*#([0-9]+).*$')
 CLANG_REVISION_RE = re.compile(r'^CLANG_REVISION = \'(\d+)\'$')
@@ skipping 435 matching lines @@
   _CreateRollBranch(opts.dry_run)
   UpdateDepsFile(deps_filename, current_cr_rev, new_cr_rev, changed_deps)
   _LocalCommit(commit_msg, opts.dry_run)
   _UploadCL(opts.dry_run, opts.rietveld_email)
   _SendToCQ(opts.dry_run, opts.skip_cq)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())