[Android] Fix stack symbolization when packed relocations are on.

build/android/gyp/create_stack_script.py

Index: build/android/gyp/create_stack_script.py
diff --git a/build/android/gyp/create_stack_script.py b/build/android/gyp/create_stack_script.py
new file mode 100755
index 0000000000000000000000000000000000000000..5655695872933b7a88bceb9f383af48d55b94b54
--- /dev/null
+++ b/build/android/gyp/create_stack_script.py
@@ -0,0 +1,84 @@
+#!/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.
+
+
+import argparse
+import os
+import sys
+import textwrap
+
+from util import build_utils
+
+SCRIPT_TEMPLATE = textwrap.dedent(
+    """\
+    #!/usr/bin/env python
+    #
+    # This file was generated by build/android/gyp/create_stack_script.py
+
+    import os
+    import sys
+
+    def main(argv):
+      script_directory = os.path.dirname(__file__)
+      resolve = lambda p: os.path.abspath(os.path.join(script_directory, p))
+      script_path = resolve('{script_path}')
+      script_args = {script_args}
+      script_path_args = {script_path_args}
+      for arg, path in script_path_args:
+        script_args.extend([arg, resolve(path)])
+      script_cmd = [script_path] + script_args + argv
+      print ' '.join(script_cmd)
+      os.execv(script_path, script_cmd)
+
+    if __name__ == '__main__':
+      sys.exit(main(sys.argv[1:]))
+    """)
+
+
+def main(args):
+
+  parser = argparse.ArgumentParser()
+  build_utils.AddDepfileOption(parser)
+  parser.add_argument(
+      '--script-path',
+      help='Path to the wrapped script.')
+  parser.add_argument(
+      '--script-output-path',
+      help='Path to the output script.')
+  group = parser.add_argument_group('Path arguments')
+  group.add_argument('--output-directory')
+  group.add_argument('--packed-libs')
+
+  args, script_args = parser.parse_known_args(build_utils.ExpandFileArgs(args))
+
+  def relativize(p):
+    return os.path.relpath(p, os.path.dirname(args.script_output_path))
+
+  script_path = relativize(args.script_path)
+
+  script_path_args = []
+  if args.output_directory:
+    script_path_args.append(
+        ('--output-directory', relativize(args.output_directory)))
+  if args.packed_libs:
+    for p in build_utils.ParseGnList(args.packed_libs):
+      script_path_args.append(('--packed-lib', relativize(p)))
+
+  with open(args.script_output_path, 'w') as script:
+    script.write(SCRIPT_TEMPLATE.format(
+        script_path=script_path,
+        script_args=script_args,
+        script_path_args=script_path_args))
+
+  os.chmod(args.script_output_path, 0750)
+
+  if args.depfile:
+    build_utils.WriteDepfile(args.depfile, args.script_output_path)
+
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))