Fixing BleBackgroundScan Test.

Enabling Bluetooth Scanning.

Bug: 77808094
Test: Manually, upload tests pass, ran it.
Change-Id: I0d3bff39fb8111ae470ddb7ae2b1fcc59e7a14d5
diff --git a/acts/tests/google/ble/scan/BleBackgroundScanTest.py b/acts/tests/google/ble/scan/BleBackgroundScanTest.py
index 3cb2842..9a20ed6 100644
--- a/acts/tests/google/ble/scan/BleBackgroundScanTest.py
+++ b/acts/tests/google/ble/scan/BleBackgroundScanTest.py
@@ -100,8 +100,8 @@
         """
         self.scn_ad.droid.bluetoothEnableBLE()
         self._setup_generic_advertisement()
-        self.scn_ad.droid.bleSetScanSettingsScanMode(ble_scan_settings_modes[
-            'low_latency'])
+        self.scn_ad.droid.bleSetScanSettingsScanMode(
+            ble_scan_settings_modes['low_latency'])
         filter_list, scan_settings, scan_callback = generate_ble_scan_objects(
             self.scn_ad.droid)
         self.scn_ad.droid.bleSetScanFilterDeviceName(
@@ -152,8 +152,8 @@
         """
         self._setup_generic_advertisement()
         self.scn_ad.droid.bluetoothEnableBLE()
-        self.scn_ad.droid.bleSetScanSettingsScanMode(ble_scan_settings_modes[
-            'low_latency'])
+        self.scn_ad.droid.bleSetScanSettingsScanMode(
+            ble_scan_settings_modes['low_latency'])
         filter_list, scan_settings, scan_callback = generate_ble_scan_objects(
             self.scn_ad.droid)
         self.scn_ad.droid.bleSetScanFilterDeviceName(
@@ -174,8 +174,9 @@
             try:
                 self.scn_ad.ed.pop_event(expected_event, self.default_timeout)
             except Empty:
-                self.log.error("Scan Result event not found. Expected {}".
-                               format(expected_event))
+                self.log.error(
+                    "Scan Result event not found. Expected {}".format(
+                        expected_event))
                 return False
         except Exception:
             self.log.info(
@@ -213,6 +214,7 @@
         """
         ble_state_error_msg = "Bluetooth LE State not OK {}. Expected {} got {}"
         # Enable BLE always available (effectively enabling BT in location)
+        self.scn_ad.shell.enable_ble_scanning()
         self.scn_ad.droid.bluetoothEnableBLE()
         self.scn_ad.droid.bluetoothToggleState(False)
         try:
@@ -237,8 +239,9 @@
         try:
             self.scn_ad.ed.pop_event(bluetooth_le_off, self.default_timeout)
         except Empty:
-            self.log.error("Bluetooth LE Off event not found. Expected {}".
-                           format(bluetooth_le_off))
+            self.log.error(
+                "Bluetooth LE Off event not found. Expected {}".format(
+                    bluetooth_le_off))
             return False
         state = self.scn_ad.droid.bluetoothGetLeState()
         if state != bt_adapter_states['off']: