Revert 155170 - The 'test' command is not always usable on android

build/android/pylib/android_commands.py

Index: build/android/pylib/android_commands.py
===================================================================
--- build/android/pylib/android_commands.py	(revision 155284)
+++ build/android/pylib/android_commands.py	(working copy)
@@ -1011,15 +1011,8 @@
     assert '"' not in file_name, 'file_name cannot contain double quotes'
     status = self._adb.SendShellCommand(
         '\'test -f "%s"; echo $?\'' % (file_name))
-    if not status[0].find('test: not found'):
-      return int(status) == 0
+    return int(status) == 0
 
-    status = self._adb.SendShellCommand('ls "%s"' % (file_name))
-    if not status[0].find('No such file or directory'):
-      return True
-
-    return False
-
   def RunMonkey(self, package_name, category=None, throttle=100, seed=None,
                 event_count=10000, verbosity=1, extra_args=''):
     """Runs monkey test for a given package.