[telemetry] When launching an application elevated, check if it has NOPASSWD in sudoers.

tools/telemetry/telemetry/core/forwarders/android_forwarder.py

Index: tools/telemetry/telemetry/core/forwarders/android_forwarder.py
diff --git a/tools/telemetry/telemetry/core/forwarders/android_forwarder.py b/tools/telemetry/telemetry/core/forwarders/android_forwarder.py
index a4c77cf92e07c48a2f85e14fd3d4f07f60ee1cc9..f5878968e65657d6639e94e4de1790dbac0c7543 100644
--- a/tools/telemetry/telemetry/core/forwarders/android_forwarder.py
+++ b/tools/telemetry/telemetry/core/forwarders/android_forwarder.py
@@ -240,7 +240,8 @@ class AndroidRndisConfigurator(object):
 
   def _WriteProtectedFile(self, file_path, contents):
     subprocess.check_call(
-        ['sudo', 'bash', '-c', 'echo -e "%s" > %s' % (contents, file_path)])
+        ['/usr/bin/sudo', 'bash', '-c',
+         'echo -e "%s" > %s' % (contents, file_path)])
 
   def _InstallHorndis(self):
     if 'HoRNDIS' in subprocess.check_output(['kextstat']):
@@ -250,7 +251,7 @@ class AndroidRndisConfigurator(object):
         path.GetTelemetryDir(), 'bin', 'mac', 'HoRNDIS-rel5.pkg')
     cloud_storage.GetIfChanged(pkg_path, bucket=cloud_storage.PUBLIC_BUCKET)
     subprocess.check_call(
-        ['sudo', 'installer', '-pkg', pkg_path, '-target', '/'])
+        ['/usr/bin/sudo', 'installer', '-pkg', pkg_path, '-target', '/'])
 
   def _DisableRndis(self):
     self._device.SetProp('sys.usb.config', 'adb')
@@ -397,10 +398,10 @@ doit &
         if 'Telemetry' not in subprocess.check_output(
             ['networksetup', '-listallnetworkservices']):
           subprocess.check_call(
-              ['sudo', 'networksetup',
+              ['/usr/bin/sudo', 'networksetup',
                '-createnetworkservice', 'Telemetry', host_iface])
           subprocess.check_call(
-              ['sudo', 'networksetup',
+              ['/usr/bin/sudo', 'networksetup',
                '-setmanual', 'Telemetry', '192.168.123.1', '255.255.255.0'])
       elif platform.GetHostPlatform().GetOSName() == 'linux':
         with open(self._NETWORK_INTERFACES) as f:
@@ -416,8 +417,9 @@ doit &
         if not os.path.exists(interface_conf_file):
           interface_conf_dir = os.path.dirname(interface_conf_file)
           if not interface_conf_dir:
-            subprocess.call(['sudo', '/bin/mkdir', interface_conf_dir])
-            subprocess.call(['sudo', '/bin/chmod', '755', interface_conf_dir])
+            subprocess.call(['/usr/bin/sudo', '/bin/mkdir', interface_conf_dir])
+            subprocess.call(
+                ['/usr/bin/sudo', '/bin/chmod', '755', interface_conf_dir])
           interface_conf = '\n'.join([
               '# Added by Telemetry for RNDIS forwarding.',
               'allow-hotplug %s' % host_iface,
@@ -426,7 +428,7 @@ doit &
               '  netmask 255.255.255.0',
               ])
           self._WriteProtectedFile(interface_conf_file, interface_conf)
-          subprocess.check_call(['sudo', 'ifup', host_iface])
+          subprocess.check_call(['/usr/bin/sudo', 'ifup', host_iface])
       logging.info('Waiting for RNDIS connectivity...')
       util.WaitFor(HasHostAddress, 10)