diagnose_bloat.py: disable --cloud for Linux.

tools/binary_size/diagnose_bloat.py

 #!/usr/bin/env python
 # Copyright 2017 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.
 
 """Tool for finding the cause of binary size bloat.
 
 See //tools/binary_size/README.md for example usage.
 
 Note: this tool will perform gclient sync/git checkout on your local repo if
@@ skipping 737 matching lines @@
                            help='GN APK target to build. Ignored for Linux. '
                                 'Default %s.' % _DEFAULT_ANDROID_TARGET)
   if len(sys.argv) == 1:
     parser.print_help()
     sys.exit()
   args = parser.parse_args()
   log_level = logging.DEBUG if args.verbose else logging.INFO
   logging.basicConfig(level=log_level,
                       format='%(levelname).1s %(relativeCreated)6d %(message)s')
   build = _BuildHelper(args)
-  if build.IsCloud() and args.subrepo:
+  if build.IsCloud():
+    if args.subrepo:
       parser.error('--subrepo doesn\'t work with --cloud')
+    if build.IsLinux():
+      parser.error('--target-os linux doesn\'t work with --cloud because map '
+                   'files aren\'t generated by builders (crbug.com/716209).')
+
 
   subrepo = args.subrepo or _SRC_ROOT
   _EnsureDirectoryClean(subrepo)
   _SetRestoreFunc(subrepo)
   if build.IsLinux():
     _VerifyUserAccepts('Linux diffs have known deficiencies (crbug/717550).')
 
   rev, reference_rev = _ValidateRevs(
       args.rev, args.reference_rev or args.rev + '^', subrepo)
   revs = _GenerateRevList(rev, reference_rev, args.all, subrepo)
@@ skipping 32 matching lines @@
 
       if i != 0:
         diff_mngr.MaybeDiff(i - 1, i)
 
     diff_mngr.Summarize()
 
 
 if __name__ == '__main__':
   sys.exit(main())