Delete tools/telemetry.

tools/telemetry/telemetry/util/color_histogram.py

Index: tools/telemetry/telemetry/util/color_histogram.py
diff --git a/tools/telemetry/telemetry/util/color_histogram.py b/tools/telemetry/telemetry/util/color_histogram.py
deleted file mode 100644
index 76bb4b9caffc13350387a208880139aab252279a..0000000000000000000000000000000000000000
--- a/tools/telemetry/telemetry/util/color_histogram.py
+++ /dev/null
@@ -1,67 +0,0 @@
-# Copyright 2014 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.
-
-"""Color Histograms and implementations of functions operating on them."""
-
-from __future__ import division
-
-import collections
-
-from telemetry.internal.util import external_modules
-
-np = external_modules.ImportOptionalModule('numpy')
-
-
-def HistogramDistance(hist1, hist2, default_color=None):
-  """Earth mover's distance.
-  http://en.wikipedia.org/wiki/Earth_mover's_distance"""
-  if len(hist1) != len(hist2):
-    raise ValueError('Trying to compare histograms '
-                     'of different sizes, %s != %s' % (len(hist1), len(hist2)))
-  if len(hist1) == 0:
-    return 0
-
-  sum_func = np.sum if np is not None else sum
-
-  n1 = sum_func(hist1)
-  n2 = sum_func(hist2)
-  if (n1 == 0 or n2 == 0) and default_color is None:
-    raise ValueError('Histogram has no data and no default color.')
-  if n1 == 0:
-    hist1[default_color] = 1
-    n1 = 1
-  if n2 == 0:
-    hist2[default_color] = 1
-    n2 = 1
-
-  if np is not None:
-    remainder = np.multiply(hist1, n2) - np.multiply(hist2, n1)
-    cumsum = np.cumsum(remainder)
-    total = np.sum(np.abs(cumsum))
-  else:
-    total = 0
-    remainder = 0
-    for value1, value2 in zip(hist1, hist2):
-      remainder += value1 * n2 - value2 * n1
-      total += abs(remainder)
-    assert remainder == 0, (
-        '%s pixel(s) left over after computing histogram distance.'
-        % abs(remainder))
-  return abs(float(total) / n1 / n2)
-
-
-class ColorHistogram(
-    collections.namedtuple('ColorHistogram', ['r', 'g', 'b', 'default_color'])):
-  # pylint: disable=no-init
-  # pylint: disable=super-on-old-class
-
-  def __new__(cls, r, g, b, default_color=None):
-    return super(ColorHistogram, cls).__new__(cls, r, g, b, default_color)
-
-  def Distance(self, other):
-    total = 0
-    for i in xrange(3):
-      default_color = self[3][i] if self[3] is not None else None
-      total += HistogramDistance(self[i], other[i], default_color)
-    return total