Revert of Move LatencyInfo to ui/latency_info

ui/latency_info/latency_info_unittests.gyp

-# Copyright 2016 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.
-
-{
-  'variables': {
-    'chromium_code': 1,
-  },
-  'targets': [
-    {
-      # GN version: //ui/latency_info:latency_info_unittests
-      'target_name': 'latency_info_unittests',
-      'type': '<(gtest_target_type)',
-      'dependencies': [
-        '<(DEPTH)/base/base.gyp:base',
-        '<(DEPTH)/base/base.gyp:run_all_unittests',
-        '<(DEPTH)/base/base.gyp:test_support_base',
-        '<(DEPTH)/ipc/ipc.gyp:test_support_ipc',
-        '<(DEPTH)/testing/gtest.gyp:gtest',
-        'latency_info.gyp:latency_info',
-        'latency_info.gyp:latency_info_ipc',
-      ],
-      'sources': [
-        # Note: sources list duplicated in GN build.
-        'latency_info_unittest.cc',
-        'ipc/latency_info_param_traits_unittest.cc',
-      ],
-      'include_dirs': [
-        '../../testing/gmock/include',
-      ],
-    },
-  ],
-}