* 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
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