[HWASan] Try 'google' prefixed apex directories in symbolizer.

[hctim]

Summary

Google-signed apexes appear on Android build servers' symbol files as
being under /apex/com.google.android.<foo>/. In reality, the apexes are
always installed as /apex/com.android.<foo>/ (note the lack of
'google'). In order for local symbolization under hwasan_symbolize to
work correctly, we also try the 'google' directory.

[eugenis]

LGTM

compiler-rt/lib/hwasan/scripts/hwasan_symbolize

class Symbolizer:
 
   def __process_binary_name(self, name):
     if name.startswith('/'):
       name = name[1:]
     for p in self.__binary_prefixes:
       full_path = os.path.join(p, name)
       if os.path.exists(full_path):
         return full_path
+      apex_prefix = "apex/com.android."
+      if name.startswith(apex_prefix):
+        full_path = os.path.join(p, "apex/com.google.android." + name[len(apex_prefix):])
+        if os.path.exists(full_path):
+          return full_path
     # Try stripping extra path components as the last resort.
     for p in self.__binary_prefixes:
       full_path = os.path.join(p, os.path.basename(name))
       if os.path.exists(full_path):
         return full_path
     if name not in self.__warnings:
       print("Could not find symbols for", name, file=sys.stderr)
       self.__warnings.add(name)