Fix path prefix stripping in asan_symbolize.py.

BUG=none
R=glider@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/586533004

Cr-Commit-Position: refs/heads/master@{#295694}

tools/valgrind/asan/asan_symbolize.py

@@ -7,16 +7,8 @@
 from third_party import asan_symbolize
 
 import os
-import re
 import sys
 
-def fix_filename(file_name):
-  for path_to_cut in sys.argv[1:]:
-    file_name = re.sub(".*" + path_to_cut, "", file_name)
-  file_name = re.sub(".*asan_[a-z_]*.cc:[0-9]*", "_asan_rtl_", file_name)
-  file_name = re.sub(".*crtstuff.c:0", "???:0", file_name)
-  return file_name
-
 class LineBuffered(object):
   """Disable buffering on a file object."""
   def __init__(self, stream):
@@ -43,7 +35,9 @@ def disable_buffering():
 def main():
   disable_buffering()
   asan_symbolize.demangle = True
-  loop = asan_symbolize.SymbolizationLoop(binary_name_filter=fix_filename)
+  asan_symbolize.fix_filename_patterns = sys.argv[1:]
+  asan_symbolize.logfile = sys.stdin
+  loop = asan_symbolize.SymbolizationLoop()
   loop.process_logfile()
 
 if __name__ == '__main__':