Refactor dmprof: Split dmprof.py into modules.

tools/deep_memory_profiler/lib/range_dict.py

 # Copyright (c) 2013 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.
 
 import os
 import sys
 
-BASE_PATH = os.path.dirname(os.path.abspath(__file__))
-BINTREES_PATH = os.path.join(
-    BASE_PATH, os.pardir, os.pardir, 'third_party', 'bintrees')
-sys.path.insert(0, BINTREES_PATH)
+_BASE_PATH = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+_BINTREES_PATH = os.path.join(
+    _BASE_PATH, os.pardir, os.pardir, 'third_party', 'bintrees')
+sys.path.insert(0, _BINTREES_PATH)
 
 from bintrees import FastRBTree  # pylint: disable=F0401
 
 
 class ExclusiveRangeDict(object):
   """A class like dict whose key is a range [begin, end) of integers.
 
   It has an attribute for each range of integers, for example:
   [10, 20) => Attribute(0),
   [20, 40) => Attribute(1),
@@ skipping 113 matching lines @@
       prev_end = range_end
 
     for missing_begin, missing_end in missing_ranges:
       self._tree[missing_begin] = (missing_end, self._attr())
 
     for range_begin, range_value in self._tree.itemslice(begin, end):
       yield range_begin, range_value[0], range_value[1]
 
   def __str__(self):
     return str(self._tree)