[Android] Remove more references to and uses of AndroidCommands.

tools/telemetry/telemetry/unittest_util/system_stub.py

 # Copyright 2012 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.
 
 """Provides stubs for os, sys and subprocess for testing
 
 This test allows one to test code that itself uses os, sys, and subprocess.
 """
 
 import os
@@ skipping 42 matching lines @@
       if original_module is None:
         # This will happen when we override built-in functions, like open.
         # If we don't delete the attribute, we will shadow the built-in
         # function with an attribute set to None.
         delattr(self._base_module, module_name)
       else:
         setattr(self._base_module, module_name, original_module)
     self._overrides = {}
 
 
-class AndroidCommands(object):
-
-  def __init__(self):
-    self.can_access_protected_file_contents = False
-
-  def CanAccessProtectedFileContents(self):
-    return self.can_access_protected_file_contents
-
-
 class AdbDevice(object):
 
   def __init__(self):
+    self.has_root = False
+    self.needs_su = False
     self.shell_command_handlers = {}
     self.mock_content = []
     self.system_properties = {}
     if self.system_properties.get('ro.product.cpu.abi') == None:
       self.system_properties['ro.product.cpu.abi'] = 'armeabi-v7a'
-    self.old_interface = AndroidCommands()
+
+  def HasRoot(self):
+    return self.has_root
+
+  def NeedsSU(self):
+    return self.needs_su
 
   def RunShellCommand(self, args, **_kwargs):
     if isinstance(args, basestring):
       args = shlex.split(args)
     handler = self.shell_command_handlers[args[0]]
     return handler(args)
 
   def FileExists(self, _):
     return False
 
@@ skipping 443 matching lines @@
       elif device_id == 'failure':
         raise Exception('Test exception.')
 
     def install_cert(self, overwrite_cert=False):
       pass
 
 class PlatformSettingsStub(object):
   @staticmethod
   def HasSniSupport():
     return True