Fix 5044158: Initial pass: add music transport controls to LockScreen

Refactored all lockscreen notifications to go through new KeyguardStatusViewManager.
This is required to intercept messages originally intended for separate TextViews that
are now shown in a single view when showing the transport control view.

Refactor EmergencyCallButton to be handled by common code in KeyguardStatusViewManager.

First pass at LockScreenWidgetCallback for LockScreen "widgets" to send events back to LockScreen.

First pass at LockScreenWidgetInterface, which will be required of Views that want to be rendered on
LockScreen.

Added place-holder TransportControlView until the real one is ready and integrated it into GridLayouts.

Ensured emergencyCallButton is in all views, even if not shown since some devices may lock the user
out if certain criteria isn't met (missing SIM, etc).

Refactored layouts and removed keyguard_screen_status*.xml since layouts are all over the map and
no longer make good use of a shared layout for this.

Minor tweak to MultiWaveView to fix layout issues when placed in GridLayout where the measurement
was being calculated improperly.

Moved EmergencyCallButton to bottom of view where we can.

Removed unused Alpha keyboards from tablet password unlock layouts.

Removed unused views (status2, emergencyCallText screenLocked) from layouts and made common views have common names.

Fixed bug with MultiWave layout in landscape where array was shown in wrong orientation.

Separated clock colors for phones/tablets since they're now different.

Converted remaining phone layouts to use GridLayout.

Start routing audiomanager events to lockscreen views.

Move emergency call button handling to KeyguardStatusViewManager.

Change-Id: I480b0346cfe19aad316fea0c0aaabf8862693636
33 files changed