Fix the stack script issue when symbolizing tombstones.

build/android/tombstones.py

Index: build/android/tombstones.py
diff --git a/build/android/tombstones.py b/build/android/tombstones.py
index dbc6281c2f541af6cde7978be0c12115210379f7..0a8f968afb5fc0ec2b25b24ccf9b9b3852343f9a 100755
--- a/build/android/tombstones.py
+++ b/build/android/tombstones.py
@@ -130,8 +130,15 @@ def _ResolveSymbols(tombstone_data, include_stack, device_abi):
   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'):