Fix the stack script issue when symbolizing tombstones.

tools/mb/mb.py

 #!/usr/bin/env python
 # Copyright 2015 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.
 
 """MB - the Meta-Build wrapper around GYP and GN
 
 MB is a wrapper script for GYP and GN that can be used to generate build files
 for sets of canned configurations and analyze them.
 """
@@ skipping 868 matching lines @@
         runtime_deps_path = self.ToAbsPath(build_dir, r)
         if self.Exists(runtime_deps_path):
           break
       else:
         raise MBErr('did not generate any of %s' %
                     ', '.join(runtime_deps_targets))
 
       command, extra_files = self.GetIsolateCommand(target, vals)
 
       runtime_deps = self.ReadFile(runtime_deps_path).splitlines()
+      if android:

[jbudorick, 2017/07/26 18:39:56]

I'm concerned about hacking this into mb.py rather than having it encoded in gn.
Andrew, I'm curious as to why you're in favor of this instead of changes on the
gn side.

[agrieve, 2017/07/26 19:03:57]

In GN, "runtime_deps" are the things required to run an executable. I don't
think unstripped .so files fall into this definition. This is more of a testing
/ swarming concern, so I actually think mb.py is a good spot for it.

+        unstripped_libs = []

[jbudorick, 2017/07/26 21:55:53]

one caveat: please add a TODO here with the bug number.

[BigBossZhiling, 2017/07/26 22:11:54]

Done.

+        for f in runtime_deps:
+          if f.endswith('.so'):
+            if os.path.isfile(self.PathJoin(self.ToAbsPath(build_dir),
+                                            'lib.unstripped',
+                                            os.path.basename(f))):
+              unstripped_libs.append('lib.unstripped/%s' % os.path.basename(f))
+        runtime_deps.extend(unstripped_libs)
 
       self.WriteIsolateFiles(build_dir, command, target, runtime_deps,
                              extra_files)
 
     return 0
 
   def RunGNIsolate(self, vals):
     target = self.args.target[0]
     isolate_map = self.ReadIsolateMap()
     err, labels = self.MapTargetsToLabels(isolate_map, [target])
@@ skipping 644 matching lines @@
   # Then check to see if the arg contains any metacharacters other than
   # double quotes; if it does, quote everything (including the double
   # quotes) for safety.
   if any(a in UNSAFE_FOR_CMD for a in arg):
     arg = ''.join('^' + a if a in ALL_META_CHARS else a for a in arg)
   return arg
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))