[Android] Remove android_commands uses from build/android/.

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..796767c2ae704b7e0abd024bb10161316746b63f 100755
--- a/build/android/host_heartbeat.py
+++ b/build/android/host_heartbeat.py
@@ -12,7 +12,7 @@ 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_utils
 
 PULSE_PERIOD = 20
@@ -20,9 +20,9 @@ PULSE_PERIOD = 20
 def main():
   while True:
     try:
-      devices = android_commands.GetAttachedDevices()
-      for device_serial in devices:
-        device_utils.DeviceUtils(device_serial).RunShellCommand(
+      devices = adb_wrapper.AdbWrapper.GetDevices()
+      for d in devices:
+        device_utils.DeviceUtils(d).RunShellCommand(
             'touch /sdcard/host_heartbeat')

[perezju, 2015/04/14 12:39:10]

pass command as list, and check_return=True?

[jbudorick, 2015/04/14 15:29:58]

same, done.

     except:
       # Keep the heatbeat running bypassing all errors.