Revert of Remove catapult_base from telemetry.

tools/telemetry/catapult_base/refactor/module.py

+# Copyright 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.
+
+from catapult_base.refactor import annotated_symbol
+
+
+class Module(object):
+  def __init__(self, file_path):
+    self._file_path = file_path
+
+    with open(self._file_path, 'r') as f:
+      self._snippet = annotated_symbol.Annotate(f)
+
+  @property
+  def file_path(self):
+    return self._file_path
+
+  @property
+  def modified(self):
+    return self._snippet.modified
+
+  def FindAll(self, snippet_type):
+    return self._snippet.FindAll(snippet_type)
+
+  def FindChildren(self, snippet_type):
+    return self._snippet.FindChildren(snippet_type)
+
+  def Write(self):
+    """Write modifications to the file."""
+    if not self.modified:
+      return
+
+    # Stringify before opening the file for writing.
+    # If we fail, we won't truncate the file.
+    string = str(self._snippet)
+    with open(self._file_path, 'w') as f:
+      f.write(string)