[Android] Remove android_commands uses from build/android/. (reland)

build/android/host_heartbeat.py

Index: build/android/host_heartbeat.py
diff --git a/build/android/host_heartbeat.py b/build/android/host_heartbeat.py
index 429fca9ac1c96309e09e7dd04bbcc2401c4f74d0..11421ce74f6d4f9ebafb5fd0052fb727f9e89763 100755
--- a/build/android/host_heartbeat.py
+++ b/build/android/host_heartbeat.py
@@ -12,7 +12,8 @@ This heart beat lets the devices know that they are connected to a host.
 import sys
 import time
 
-from pylib import android_commands
+from pylib.device import adb_wrapper
+from pylib.device import device_filter
 from pylib.device import device_utils
 
 PULSE_PERIOD = 20
@@ -20,10 +21,11 @@ PULSE_PERIOD = 20
 def main():
   while True:
     try:
-      devices = android_commands.GetAttachedDevices()
-      for device_serial in devices:
-        device_utils.DeviceUtils(device_serial).RunShellCommand(
-            'touch /sdcard/host_heartbeat')
+      devices = adb_wrapper.AdbWrapper.Devices(
+          filters=device_filter.DefaultFilters())
+      for d in devices:
+        device_utils.DeviceUtils(d).RunShellCommand(
+            ['touch', '/sdcard/host_heartbeat'], check_return=True)
     except:
       # Keep the heatbeat running bypassing all errors.
       pass