Use full path to apk install script and CheckInstall apk.

build/android/device_status_check.py

Index: build/android/device_status_check.py
diff --git a/build/android/device_status_check.py b/build/android/device_status_check.py
index 47a63a0969a757bd75a25f25de5ba45c563c0470..bafdf7da2ca3785e0be5de2c886c11b04a215d19 100755
--- a/build/android/device_status_check.py
+++ b/build/android/device_status_check.py
@@ -12,8 +12,9 @@ import smtplib
 import sys
 import re
 
-from pylib import buildbot_report
 from pylib import android_commands
+from pylib import buildbot_report
+from pylib import constants
 from pylib.cmd_helper import GetCmdOutput
 
 
@@ -39,8 +40,9 @@ def DeviceInfo(serial):
   setup_wizard_disabled = AdbShellCmd(
       'getprop ro.setupwizard.mode') == 'DISABLED'
   battery = AdbShellCmd('dumpsys battery')
-  install_output = GetCmdOutput(['build/android/adb_install_apk.py', '--apk',
-                                 'build/android/CheckInstallApk-debug.apk'])
+  install_output = GetCmdOutput(
+    ['%s/build/android/adb_install_apk.py' % constants.CHROME_DIR, '--apk',
+     '%s/build/android/CheckInstallApk-debug.apk' % constants.CHROME_DIR])
   install_speed_found = re.findall('(\d+) KB/s', install_output)
   if install_speed_found:
     install_speed = int(install_speed_found[0])
@@ -67,21 +69,23 @@ def DeviceInfo(serial):
             '']
 
   errors = []
-  if battery_level < 5:
+  if battery_level < 15:
     errors += ['Device critically low in battery. Do not use for testing.']
   if not setup_wizard_disabled:
     errors += ['Setup wizard not disabled. Was it provisioned correctly?']
   if device_product_name == 'mantaray' and ac_power != 'true':
     errors += ['Mantaray device not connected to AC power.']
-  if install_speed < 800:
-    errors += ['Device install speed too low. Do not use for testing.']
+  # TODO(navabi): Insert warning once we have a better handle of what install
+  # speeds to expect. The following lines were causing too many alerts.
+  # if install_speed < 500:
+  #   errors += ['Device install speed too low. Do not use for testing.']
 
   # TODO(navabi): Determine if device status check step should fail on slow
   # install speed. The original CL caused the step to fail but was reverted
   # because it caused too many early failures. Determine if it was just flake.
   # Also, do not fail on 'Unknown' caused by offline device, because other
   # devices can still be used for tests.
-  fail_step = (battery_level == 'Unknown' or battery_level >= 5)
+  fail_step = (battery_level == 'Unknown' or battery_level >= 15)
   return device_type, device_build, '\n'.join(report), errors, fail_step
 
 
@@ -183,6 +187,7 @@ def main():
     parser.error('Unknown options %s' % args)
   devices = android_commands.GetAttachedDevices()
   types, builds, reports, errors = [], [], [], []
+  fail_step_lst = []
   if devices:
     types, builds, reports, errors, fail_step_lst = zip(*[DeviceInfo(dev)
                                                           for dev in devices])