Removes files from //build that we don't need

build/android/symbolize.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.
-
-"""Symbolizes stack traces generated by Chromium for Android.
-
-Sample usage:
-  adb logcat chromium:V | symbolize.py
-"""
-
-import os
-import re
-import sys
-
-from pylib import constants
-
-# Uses symbol.py from third_party/android_platform, not python's.
-sys.path.insert(0,
-                os.path.join(constants.DIR_SOURCE_ROOT,
-                            'third_party/android_platform/development/scripts'))
-import symbol
-
-# Sample output from base/debug/stack_trace_android.cc
-#00 0x693cd34f /path/to/some/libfoo.so+0x0007434f
-TRACE_LINE = re.compile(r'(?P<frame>\#[0-9]+ 0x[0-9a-f]{8,8}) '
-                        r'(?P<lib>[^+]+)\+0x(?P<addr>[0-9a-f]{8,8})')
-
-class Symbolizer(object):
-  def __init__(self, output):
-    self._output = output
-
-  def write(self, data):
-    while True:
-      match = re.search(TRACE_LINE, data)
-      if not match:
-        self._output.write(data)
-        break
-
-      frame = match.group('frame')
-      lib = match.group('lib')
-      addr = match.group('addr')
-
-      # TODO(scherkus): Doing a single lookup per line is pretty slow,
-      # especially with larger libraries. Consider caching strategies such as:
-      # 1) Have Python load the libraries and do symbol lookups instead of
-      #    calling out to addr2line each time.
-      # 2) Have Python keep multiple addr2line instances open as subprocesses,
-      #    piping addresses and reading back symbols as we find them
-      # 3) Read ahead the entire stack trace until we find no more, then batch
-      #    the symbol lookups.
-      #
-      # TODO(scherkus): These results are memoized, which could result in
-      # incorrect lookups when running this script on long-lived instances
-      # (e.g., adb logcat) when doing incremental development. Consider clearing
-      # the cache when modification timestamp of libraries change.
-      sym = symbol.SymbolInformation(lib, addr, False)[0][0]
-
-      if not sym:
-        post = match.end('addr')
-        self._output.write(data[:post])
-        data = data[post:]
-        continue
-
-      pre = match.start('frame')
-      post = match.end('addr')
-
-      self._output.write(data[:pre])
-      self._output.write(frame)
-      self._output.write(' ')
-      self._output.write(sym)
-
-      data = data[post:]
-
-  def flush(self):
-    self._output.flush()
-
-
-def main():
-  symbolizer = Symbolizer(sys.stdout)
-  for line in sys.stdin:
-    symbolizer.write(line)
-  symbolizer.flush()
-
-
-if __name__ == '__main__':
-  main()