WebRTC: Move Win Clang commit bots to client.webrtc master.

masters/master.client.webrtc/slaves.cfg

 # 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.
 
 slaves = [
   # Linux 32-bit.
   {
     'master': 'WebRTC',
     'os': 'linux',
     'version': 'precise',
@@ skipping 150 matching lines @@
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'builder': [
       'Win32 Debug',
       'Win32 Release',
       'Win64 Debug',
       'Win64 Release',
       'Win64 Debug (GN)',
       'Win64 Release (GN)',
+      'Win32 Debug (Clang)',
+      'Win32 Release (Clang)',
+      'Win64 Debug (Clang)',
+      'Win64 Release (Clang)',
       'Win SyzyASan',
     ],
     'hostname': 'vm%d-m3' % i,
   } for i in [162, 168, 169, 193] + range(87, 91)
 ] + [
   {
     'master': 'WebRTC',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
@@ skipping 18 matching lines @@
     'master': 'WebRTC',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'builder': [
       'Win32 Release [large tests]',
     ],
     'hostname': 'chromeperf90',
   }
 ]