Ohh, I missed that bit.

`minimizeMemoryUsage` introduced by commit [`deb340fb0b07`][1], by bug [788021][2] landed in mozilla18.
Long story short, it's safe to use `nsIMemoryReporterManager`'s implementation even for ESR which is ESR24 now.


[1]: https://hg.mozilla.org/mozilla-central/rev/deb340fb0b07#l4.55 "Bug 788021 - Part 2: Add and implement nsIMemoryReporter::DumpMemoryReportsToFile. r=njn,cjones"
[2]: https://bugzilla.mozilla.org/show_bug.cgi?id=788021 "Bug 788021 - Dump about:memory to a file upon receiving a signal"