Merge "Make target dirty segment ratio tunable" am: a303ea13 am: 6b1bd9fb...

Merge "Make target dirty segment ratio tunable" am: a303ea13 am: 6b1bd9fb am: 3f02098c am: 932dd4d1 am: b2b7a9b4

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2132302



Change-Id: Ibfda08d2d6d4489dbb6c0392b0e993d976c99997
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>