[automerger skipped] Allow CacheOomRanker to rerank when there's <8 processes in the cache. am: 850b432a am: fdd24614 am: d5d42f7c -s ours

am skip reason: Merged-In I0533da0a70cfe7ed1b48e4f98be24a46f17f7845 with SHA-1 f913ae21 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15684472

Change-Id: I143e631c77a8d2d4cec840d85addb537ae3e50ff