Adding additional logging for deobfuscate timeout

We've been seeing timeouts but we really don't know why. Hopefully this
logging will make it obvious.

Bug: 1351023
Change-Id: I8e3d78715cc6c5c8f0f1203b0052414a107b944a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3881005
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1044687}

build/android/pylib/symbols/deobfuscator.py

@@ -110,7 +110,18 @@ def deobfuscate_reader():
               'deobfuscator: Close() called by another thread during join().')
           return lines
         if reader_thread.is_alive():
-          logging.error('deobfuscator: Timed out.')
+          logging.error('deobfuscator: Timed out after %f seconds with input:',
+                        timeout)
+          # We are seeing timeouts but don't know why. Hopefully seeing the
+          # lines that cause timeouts can make it obvious what the deobfuscator
+          # is struggling with.
+          for l in lines:
+            logging.error(l)
+          logging.error('deobfuscator: End of timed out input.')
+          logging.error('deobfuscator: Timed out output was:')
+          for l in out_lines:
+            logging.error(l)
+          logging.error('deobfuscator: End of timed out output.')
           self.Close()
           return lines
         return out_lines