Fix the stack script issue when symbolizing tombstones.

build/android/tombstones.py

 #!/usr/bin/env python
 #
 # Copyright 2013 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.
 #
 # Find the most recent tombstone file(s) on all connected devices
 # and prints their stacks.
 #
 # Assumes tombstone file was created with current symbols.
@@ skipping 112 matching lines @@
     found_abi = re.search('ABI: \'(.+?)\'', line)
     if found_abi:
       device_abi = found_abi.group(1)
   arch = _DeviceAbiToArch(device_abi)
   if not arch:
     return
 
   stack_tool = os.path.join(os.path.dirname(__file__), '..', '..',
                             'third_party', 'android_platform', 'development',
                             'scripts', 'stack')
+
   cmd = [stack_tool, '--arch', arch, '--output-directory',
          constants.GetOutDirectory()]
+  if os.path.exists(os.path.join(constants.GetOutDirectory(), 'lib')):
+    for root, _, files in os.walk(os.path.join(constants.GetOutDirectory(),
+                                               'lib')):
+      for file_name in files:
+        if file_name.endswith('.so'):
+          cmd.extend(['--packed-lib', os.path.join(root, file_name)])

[jbudorick, 2017/07/12 20:57:28]

--packed-lib implies that the library has had its relocations packed. It doesn't
look like we know that to be the case here.

[BigBossZhiling, 2017/07/17 06:42:58]

unstripped libs will always be there now in isolated inputs. So I believe stack
script will search in unstripped directory first by default?

   proc = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
   output = proc.communicate(input='\n'.join(tombstone_data))[0]
   for line in output.split('\n'):
     if not include_stack and 'Stack Data:' in line:
       break
     yield line
 
 
 def _ResolveTombstone(tombstone):
   lines = []
@@ skipping 161 matching lines @@
   for device in devices:
     resolved_tombstones = ResolveTombstones(
         device, args.all_tombstones,
         args.stack, args.wipe_tombstones, args.jobs)
     for line in resolved_tombstones:
       logging.info(line)
 
 
 if __name__ == '__main__':
   sys.exit(main())