Merge changes Id747dc81,I3a74bd36,I2395527c,I86aeb066,Ic33d5766,I7bef7390,I4b797dd8,Id3622e9e,I28087c63,Ia1c6d909,I95a766dd,I6c0236c5,Ib71287f4,I4bcbefdc,I22a7cb8d,Ie24dbeaf,I7dbc4b45,I21d524ea,Iaa5bf14e,I7db766c3,I93fcaca2,I1eb72044,I05ffbe7c,Ifdfe2ff8,Ia8f767a2
* changes:
Fix problems dispatching media button events on headless devices
Add headless mode for running the framework without the surface flinger
SettingsProvider: Allow overridding default value for Setttings.Secure.DEVICE_PROVISIONED
Load lockscreen.disabled setting on database create as well as upgrade
SystemUI: Log an error instead of throwing an exception if navigation bar is enabled in tablet UI
SettingsProvider: Add support for overriding lockscreen.disabled default value
Allow overriding default STAY_ON_WHILE_PLUGGED_IN setting value in an overlay
Disable output processing when opening serial port.
Update aidl for new Broker API.
aidl: All flattenable types now must also be parcelable.
Update aidl to new APIs.
Suport RpcData as a parcelable type.
Modified AIDL to support authentication
Fix disconnect from wired ethernet issues.
Fix PresenterClass by adding a _listener field
add presenters to aidl.
Add SerialPort.sendBreak()
Generate fallthrough for unhandled actions in RPC methods.
PhoneWindowManager: Disable boot progress dialog on headless builds
Support custom flattenable types for RPC.
SystemServer: Don't start A2DP service if audio is not enabled
Add RpcData as a built-in marshallable type.
Add the full suite of RpcData types.
Checkpoint adding @home RPC support to aidl
ActivityManager: Make sure BOOT_COMPLETED Intent is sent when running headless