Do not perform unnecessary install for device status dashboard step.

build/android/buildbot/bb_device_status_check.py

 #!/usr/bin/env python
 #
 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """A class to keep track of devices across builds and report state."""
 import logging
 import optparse
 import os
@@ skipping 24 matching lines @@
 
   device_adb = android_commands.AndroidCommands(serial)
 
   # TODO(navabi): Replace AdbShellCmd with device_adb.
   device_type = device_adb.GetBuildProduct()
   device_build = device_adb.GetBuildId()
   device_build_type = device_adb.GetBuildType()
   device_product_name = device_adb.GetProductName()
 
   battery = device_adb.GetBatteryInfo()
-  install_output = GetCmdOutput(
-    ['%s/build/android/adb_install_apk.py' % constants.DIR_SOURCE_ROOT, '--apk',
-     '%s/build/android/CheckInstallApk-debug.apk' % constants.DIR_SOURCE_ROOT])
 
   def _GetData(re_expression, line, lambda_function=lambda x:x):
     if not line:
       return 'Unknown'
     found = re.findall(re_expression, line)
     if found and len(found):
       return lambda_function(found[0])
     return 'Unknown'
 
-  install_speed = _GetData('(\d+) KB/s', install_output)
+  if options.device_status_dashboard:
+    # Dashboard does not track install speed. Do not unnecessarily install.
+    install_speed = 'Unknown'
+  else:
+    install_output = GetCmdOutput(
+      ['%s/build/android/adb_install_apk.py' % constants.DIR_SOURCE_ROOT,
+       '--apk',
+       '%s/build/android/CheckInstallApk-debug.apk' % constants.DIR_SOURCE_ROOT
+      ])
+    install_speed = _GetData('(\d+) KB/s', install_output)
+
   ac_power = _GetData('AC powered: (\w+)', battery)
   battery_level = _GetData('level: (\d+)', battery)
   battery_temp = _GetData('temperature: (\d+)', battery,
                           lambda x: float(x) / 10.0)
   imei_slice = _GetData('Device ID = (\d+)',
                         device_adb.GetSubscriberInfo(),
                         lambda x: x[-6:])
   report = ['Device %s (%s)' % (serial, device_type),
             '  Build: %s (%s)' %
               (device_build, device_adb.GetBuildFingerprint()),
@@ skipping 183 matching lines @@
     # devices with critically low battery or install speed. Remove those devices
     # from testing, allowing build to continue with good devices.
     return 1
 
   if not devices:
     return 1
 
 
 if __name__ == '__main__':
   sys.exit(main())