Reland https://codereview.chromium.org/292153006 with minor changes.

tools/valgrind/asan/asan_symbolize.py

Index: tools/valgrind/asan/asan_symbolize.py
diff --git a/tools/valgrind/asan/asan_symbolize.py b/tools/valgrind/asan/asan_symbolize.py
index ba8d69859fdb290451c6d1d1f931520004e1f316..ec70979316837031bc798dc067b5a2f0eabcc852 100755
--- a/tools/valgrind/asan/asan_symbolize.py
+++ b/tools/valgrind/asan/asan_symbolize.py
@@ -45,13 +45,50 @@ def set_symbolizer_path():
     os.environ['LLVM_SYMBOLIZER_PATH'] = os.path.abspath(symbolizer_path)
 
 
+def split_path(path):
+  parts = []
+  while True:
+    path, tail = os.path.split(path)
+    if tail:
+      parts.insert(0, tail)
+    else:
+      parts.insert(0, path)
+      break
+  return parts
+
+def chrome_dsym_hints(binary):
+  parts = split_path(binary)
+  app_pos = -1
+  framework_pos = -1
+  for index in range(len(parts)):
+    part = parts[index]
+    if app_pos == -1 and part.endswith('.app'):
+      app_pos = index
+    if framework_pos == -1 and part.endswith('.framework'):
+      framework_pos = index
+  if framework_pos < 0:
+    if app_pos < 0:
+      return []
+    else:
+      parts = parts[:app_pos + 1]
+  else:
+    if app_pos > 0:
+      assert(app_pos < framework_pos)
+      parts[app_pos] = parts[framework_pos]
+      parts = parts[:app_pos + 1]
+    else:
+      parts = parts[:framework_pos + 1]
+  result = '%s.dSYM' % reduce(os.path.join, parts)
+  return [result]
+
+
 def main():
   disable_buffering()
   set_symbolizer_path()
   asan_symbolize.demangle = True
   asan_symbolize.fix_filename_patterns = sys.argv[1:]
   asan_symbolize.logfile = sys.stdin
-  loop = asan_symbolize.SymbolizationLoop()
+  loop = asan_symbolize.SymbolizationLoop(dsym_hint_producer=chrome_dsym_hints)
   loop.process_logfile()
 
 if __name__ == '__main__':