Merge remote branch 'cros/upstream' into tempbranch3

client/profilers/powertop/powertop.py

 """
 What's eating the battery life of my laptop? Why isn't it many more
 hours? Which software component causes the most power to be burned?
 These are important questions without a good answer... until now.
 """
 import time, os
 from autotest_lib.client.bin import utils, profiler
 
 class powertop(profiler.profiler):
     version = 1
     preserve_srcdir = True
 
     # filenames: list of filenames to cat
     def setup(self, *args, **dargs):
         os.chdir(self.srcdir)
-        utils.system('make')
+        utils.make()
 
 
     def start(self, test):
         self.child_pid = os.fork()
         if self.child_pid:                      # parent
             return None
         else:                                   # child
             powertop = os.path.join(self.srcdir, 'powertop') + ' -d'
             outputfile = os.path.join(test.profdir, 'powertop')
             while True:
                 output = open(outputfile, 'a')
                 output.write(time.asctime() + '\n')
                 data = utils.system_output('%s >> %s' % (powertop, outputfile))
                 output.write(data)
                 output.write('\n=========================\n')
                 output.close()
 
 
     def stop(self, test):
         os.kill(self.child_pid, 15)
 
 
     def report(self, test):
         return None