Merge tag 'android-9.0.0_r31' into lineage-16.0-android-9.0.0_r31

Android 9.0.0 Release 31 (PQ2A.190205.001)

* tag 'android-9.0.0_r31': (212 commits)
  Bluetooth: Check descriptors size in BluetoothHidDeviceAppSdpSettings
  RESTRICT AUTOMERGE: Added an app id security check in isAppForeground.
  Change types of fields of network stats reported to framework.
  Fix negative uid stats caused by 464xlat adjust when eBPF is on.
  DO NOT MERGE Fix the icon overlay after density change
  docs: Removing @see link to hidden field
  docs: Fixing typos.
  Select only preinstalled Spell Checker Services
  Import translations. DO NOT MERGE
  Change types of fields of network stats reported to framework.
  Import translations. DO NOT MERGE
  RESTRICT AUTOMERGE: Disable separated emergency button
  Import translations. DO NOT MERGE
  Import translations. DO NOT MERGE
  Import translations. DO NOT MERGE
  Import translations. DO NOT MERGE
  Import translations. DO NOT MERGE
  Import translations. DO NOT MERGE
  Import translations. DO NOT MERGE
  Import translations. DO NOT MERGE
  ...

Change-Id: Ifc797a30b839ec56ac6321dfa7c22e323c74cef1