Fix sky_tool start/listen on iOS

packages/flutter/lib/sky_tool

@@ -603,9 +603,8 @@ class IOSDevice(object):
                 '1'
             ]
             logging.info(' '.join(cmd))
-            out = subprocess.check_output(cmd)
-            match = re.search(r'\[\.\.\.\.\] Found [^\)]*\) connected', out)
-            cls._is_connected = match is not None
+            subprocess.check_output(cmd)
+            cls._is_connected = True
         except subprocess.CalledProcessError:
             cls._is_connected = False
         return cls._is_connected
@@ -1030,6 +1029,8 @@ class StartListening(object):
         while True:
             logging.info('Updating running Sky apps...')
 
+            device = AndroidDevice()
+            if device.is_connected():
                 # Restart the app on Android.  Android does not currently restart using skyx files.
                 cmd = [
                     sys.executable,