1766b3c01d
There were several errors in indexing mobile related sliceable controllers, which led them not able to display on Panel and as inline controls in search result. It's because indexing mechanism is running in a worker thread and trying to construct each controller instance, but the failed controllers' constructors need to initilize something in the main thread. - Give the main looper to the classes which only can be initialized in the main thread to fix the indexing. - Guard null pointer exception in SlicesIndexer after fixing the indexing. - Use onStart/onStop in AirplaneModePreferenceController to start/stop listener. Fixes: 149720345 Test: robotest Change-Id: Ibe5a8d6cc713eeddf26eceaabc05e6d1faa45507