In an effort to reduce unnecessary String operations and Binder calls from AccessibilityInteractionClient, also add channels to propagate tracing state to AccessibilityInteractionClient through AccessibilityManager. Bug: 157601519 Test: adb shell cmd accessibility start-trace adb shell cmd accessibility stop-trace Change-Id: Idfe220bc64a9c83679201b9a9a36b1c492f9d6cc