[Telemetry] Migrate find_dependencies internals to tools/perf

tools/telemetry/telemetry/internal/util/find_dependencies_unittest.py

-# 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.
-
-import os
-import unittest
-
-from telemetry.core import util
-from telemetry.internal.util import find_dependencies
-
-
-class FindDependenciesTest(unittest.TestCase):
-  def testFindPythonDependencies(self):
-    dog_object_path = os.path.join(
-        util.GetUnittestDataDir(),
-        'dependency_test_dir', 'dog', 'dog', 'dog_object.py')
-    cat_module_path = os.path.join(
-        util.GetUnittestDataDir(),
-        'dependency_test_dir', 'other_animals', 'cat', 'cat')
-    cat_module_init_path = os.path.join(cat_module_path, '__init__.py')
-    cat_object_path = os.path.join(cat_module_path, 'cat_object.py')
-    self.assertEquals(
-      set(p for p in find_dependencies.FindPythonDependencies(dog_object_path)),
-      {dog_object_path, cat_module_path, cat_module_init_path, cat_object_path})
-
-  def testFindPythonDependenciesWithNestedImport(self):
-    moose_module_path = os.path.join(
-        util.GetUnittestDataDir(),
-        'dependency_test_dir', 'other_animals', 'moose', 'moose')
-    moose_object_path = os.path.join(moose_module_path, 'moose_object.py')
-    horn_module_path = os.path.join(moose_module_path, 'horn')
-    horn_module_init_path = os.path.join(horn_module_path, '__init__.py')
-    horn_object_path = os.path.join(horn_module_path, 'horn_object.py')
-    self.assertEquals(
-      set(p for p in
-        find_dependencies.FindPythonDependencies(moose_object_path)),
-      {moose_object_path,
-        horn_module_path, horn_module_init_path, horn_object_path})