Chrome Version: HEAD
OS: Win

https://crash.corp.google.com/browse?q=product.Version%3E%3D%2764.0.3251.0%27%20AND%20product.Version%20LIKE%20%27__.%25.%25.%25%27%20AND%20product.name%20CONTAINS%20%27Chrome%27%20AND%20custom_data.ChromeCrashProto.magic_signature_1.name%20CONTAINS%20%27PersistentMemoryAllocator%27%20AND%20custom_data.ChromeCrashProto.magic_signature_1.name%3D%27base%3A%3APersistentMemoryAllocator%3A%3APersistentMemoryAllocator%27&sql_dialect=dremelsql&ignore_case=false&enable_rewrite=true&omit_field_name=&omit_field_value=&omit_field_opt=%3D

These crashes are all due to a bad file that is failing a CHECK:

  CHECK(IsMemoryAcceptable(memory.base, size, page_size, readonly));

It looks like the |stability_file| (chrome_browser_field_trials_desktop.cc:132) is not valid for the metrics file, either because it the create parameters are invalid or something is wrong with the file.

The file is opened with CREATE_ALWAYS so I'm not sure how it could have existing contents that cause a problem.  I'll add a check to the CreateWithFile to avoid the crash but there's a bigger problem here.