CFI Linux CF: Enable detailed diagnostics using cfi_diag=1.

masters/master.chromium.fyi/master.cfg

 # vim: ft=python:
 # 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.
 
 from buildbot.changes.filter import ChangeFilter
 from buildbot.scheduler import Dependent
 from buildbot.scheduler import Nightly
 from buildbot.scheduler import Periodic
 from buildbot.scheduler import Scheduler
@@ skipping 1697 matching lines @@
     compile_timeout=7200,
     clobber=True,
     target='Release',
     options=['chromium_builder_asan'],
     factory_properties={
       'cf_archive_build': ActiveMaster.is_production_host,
       'cf_archive_name': 'cfi',
       'gs_bucket': 'gs://chromium-browser-cfi',
       'gs_acl': 'public-read',
       'gclient_env': {
-        'GYP_DEFINES': 'cfi_vptr=1 release_extra_cflags="-O1 '
+        'GYP_DEFINES': 'cfi_vptr=1 cfi_diag=1 release_extra_cflags="-O1 '
           '-fno-inline-functions -fno-inline -fno-omit-frame-pointer"',
         'LLVM_DOWNLOAD_GOLD_PLUGIN': '1',
       },
     }),
   'category': 'chromium_cfi',
   'auto_reboot': True,
 }
 
 b_chromium_win10 = {
   'name': 'Chromium Win 10',
@@ skipping 302 matching lines @@
       fromaddr=ActiveMaster.from_address,  # Reply-To address
       mode='failing',
       relayhost=config.Master.smtp,
       subject='Build failure on %(builder)s',
       extraRecipients=[
         'sebmarchand+pgofailure@google.com',
         'scottmg+pgofailure@google.com'
       ],
       sendToInterestedUsers=False,
       builders=['Chromium Win PGO Builder']))