| Index: build/android/pylib/perf/cache_control.py
 | 
| diff --git a/build/android/pylib/perf/cache_control.py b/build/android/pylib/perf/cache_control.py
 | 
| index 09107dbe1ca2119bf3dcbbee7b3a110abcd25d5c..a065dcbb7881be08678c13da33717ba41649ab16 100644
 | 
| --- a/build/android/pylib/perf/cache_control.py
 | 
| +++ b/build/android/pylib/perf/cache_control.py
 | 
| @@ -16,7 +16,7 @@ class CacheControl(object):
 | 
|  
 | 
|    def DropRamCaches(self):
 | 
|      """Drops the filesystem ram caches for performance testing."""
 | 
| -    self._device.RunShellCommand('sync', root=True)
 | 
| +    self._device.RunShellCommand('sync', as_root=True)
 | 
|      self._device.old_interface.SetProtectedFileContents(
 | 
|          CacheControl._DROP_CACHES, '3')
 | 
|  
 | 
| 
 |