Merge branch 'android16-security-release' of...

Merge branch 'android16-security-release' of https://android.googlesource.com/platform/frameworks/base into lineage-23.0

* 'android16-security-release' of https://android.googlesource.com/platform/frameworks/base: (27 commits)
  PrintSpooler: Require empty output for PDF
  Check DPC package validity during package updates
  Trim oversized strings in setId and setConversationId
  [RESTRICT AUTOMERGE] Disallow PINNED in setLaunchWindowingMode
  Prevent root from getting unverified attributions from non system apps
  Implement onNullBinding() in autofill service connection
  cleanup: Fix permission protection of setObservedMotionEventSources
  Ensuring valid packageName when granting slice permission
  Calculate how much memory is used per account.
  Don't allow SdkSandbox to bypass systemUid check.
  Check sound Uri permission when creating a notification channel
  Don't allow hiding SysUi
  Avoid mixups between different CPSes in ZenModeConditions
  Add resolveActivityAsUserForExplicitType api to pm
  Limits the display name to 1024 characters
  DevicePolicyManager: ignore invalid proxy settings
  Defer remove splash screen while device is locked
  Prevent non-system ShutdownActivity from being launched by BatteryService
  Move BP window to Keyguard_dialog
  Ignore pinned Windows
  ...

Change-Id: I67d8ac39361295a2c717b484aa72453a4bc75c20