[Android] Remove chromium version of devil.

build/android/devil/android/valgrind_tools/base_tool.py

Index: build/android/devil/android/valgrind_tools/base_tool.py
diff --git a/build/android/devil/android/valgrind_tools/base_tool.py b/build/android/devil/android/valgrind_tools/base_tool.py
deleted file mode 100644
index 2e6e9af3d330734ccc40caf16e6707914b2dfe41..0000000000000000000000000000000000000000
--- a/build/android/devil/android/valgrind_tools/base_tool.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# Copyright (c) 2015 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.
-
-
-class BaseTool(object):
-  """A tool that does nothing."""
-  # pylint: disable=R0201
-
-  def __init__(self):
-    """Does nothing."""
-    pass
-
-  def GetTestWrapper(self):
-    """Returns a string that is to be prepended to the test command line."""
-    return ''
-
-  def GetUtilWrapper(self):
-    """Returns the wrapper name for the utilities.
-
-    Returns:
-       A string that is to be prepended to the command line of utility
-    processes (forwarder, etc.).
-    """
-    return ''
-
-  @classmethod
-  def CopyFiles(cls, device):
-    """Copies tool-specific files to the device, create directories, etc."""
-    pass
-
-  def SetupEnvironment(self):
-    """Sets up the system environment for a test.
-
-    This is a good place to set system properties.
-    """
-    pass
-
-  def CleanUpEnvironment(self):
-    """Cleans up environment."""
-    pass
-
-  def GetTimeoutScale(self):
-    """Returns a multiplier that should be applied to timeout values."""
-    return 1.0
-
-  def NeedsDebugInfo(self):
-    """Whether this tool requires debug info.
-
-    Returns:
-      True if this tool can not work with stripped binaries.
-    """
-    return False