fix: dump correct breakpad symbols on macOS (#19042)

* fix: dump correct symbols on macOS

* refactor symbol dumping

* .exe/.dll on windows

* dump .exe.pdb/.dll.pdb; also add path for msdia140.dll

* undo breakpad_symbols.zip rename

* dump_syms.exe doesn't support -i on windows

* remove unused windows symbol generation script

* win fix 🤞🤞

* import errno

* use out_dir

* i tender my resignation

build/dump_syms.py

@@ -0,0 +1,52 @@
+from __future__ import print_function
+
+import collections
+import os
+import subprocess
+import sys
+import errno
+
+# The BINARY_INFO tuple describes a binary as dump_syms identifies it.
+BINARY_INFO = collections.namedtuple('BINARY_INFO',
+                                     ['platform', 'arch', 'hash', 'name'])
+
+def get_module_info(header_info):
+  # header info is of the form "MODULE $PLATFORM $ARCH $HASH $BINARY"
+  info_split = header_info.strip().split(' ', 4)
+  if len(info_split) != 5 or info_split[0] != 'MODULE':
+    return None
+  return BINARY_INFO(*info_split[1:])
+
+def get_symbol_path(symbol_data):
+  module_info = get_module_info(symbol_data[:symbol_data.index('\n')])
+  if not module_info:
+    raise Exception("Couldn't get module info for binary '{}'".format(binary))
+  return os.path.join(module_info.name, module_info.hash, module_info.name + ".sym")
+
+def mkdir_p(path):
+  """Simulates mkdir -p."""
+  try:
+    os.makedirs(path)
+  except OSError as e:
+    if e.errno == errno.EEXIST and os.path.isdir(path):
+      pass
+    else: raise
+
+def main(dump_syms, binary, out_dir, stamp_file, dsym_file=None):
+  args = [dump_syms]
+  if dsym_file:
+    args += ["-g", dsym_file]
+  args += [binary]
+
+  symbol_data = subprocess.check_output(args)
+  symbol_path = os.path.join(out_dir, get_symbol_path(symbol_data))
+  mkdir_p(os.path.dirname(symbol_path))
+
+  with open(symbol_path, 'w') as out:
+    out.write(symbol_data)
+
+  with open(stamp_file, 'w'):
+    pass
+
+if __name__ == '__main__':
+  main(*sys.argv[1:])