The POWER_SAVE_MODE_CHANGING broadcast is sent at the same time as the
POWER_SAVE_MODE_CHANGED broadcast. Since broadcasts are asynchronous,
there's no reason to have both, so we're simplifying down to just one.
Bug: 79580230
Test: atest BatterySaverReceiverTest
Change-Id: Ib27fc91bc23126f58532e534575d912e3b72ac43
Use this receiver to listen to following updates:
1. Plug state: if it is plugged in, disable this two state
button, otherwise make it enabled
2. low power mode: If mode on, show "turn off" otherwise show
"turn on"
Bug: 72228477
Test: RunSettingsRoboTests
Change-Id: Ib3d3df9f9a5fbac8b1b876c9e193beb75f522ebd
Cherry-picked from oc-dev
This cl elicits BatterySaverReceiver that listen to the change about
battery state and battery saver state.
BatterySaverController and BatterySaverSettings will use this receiver
to update the UI.
Bug: 32410757
Test: RunSettingsRoboTests
Change-Id: Ia92c6776985b89fe6a8d5b8d80898e502942b9b5
