diagnose_bloat.py: disable --cloud for Linux.

tools/binary_size/diagnose_bloat.py

Index: tools/binary_size/diagnose_bloat.py
diff --git a/tools/binary_size/diagnose_bloat.py b/tools/binary_size/diagnose_bloat.py
index 37b5e88690d9a7363d0c990e8113dddf15f20e83..d5473eb41e7e6d50f1ff17c983a9a62b77a9d088 100755
--- a/tools/binary_size/diagnose_bloat.py
+++ b/tools/binary_size/diagnose_bloat.py
@@ -755,8 +755,13 @@ def main():
   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)