Replaces instances of the deprecated TimeTicks::HighResNow() with TimeTicks::Now().

base/BUILD.gn

 # 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("//build/config/ui.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 1156 matching lines @@
     "debug/debugger_unittest.cc",
     "debug/leak_tracker_unittest.cc",
     "debug/proc_maps_linux_unittest.cc",
     "debug/stack_trace_unittest.cc",
     "debug/task_annotator_unittest.cc",
     "debug/trace_event_argument_unittest.cc",
     "debug/trace_event_memory_unittest.cc",
     "debug/trace_event_synthetic_delay_unittest.cc",
     "debug/trace_event_system_stats_monitor_unittest.cc",
     "debug/trace_event_unittest.cc",
-    "debug/trace_event_unittest.h",
     "debug/trace_event_win_unittest.cc",
     "deferred_sequenced_task_runner_unittest.cc",
     "environment_unittest.cc",
     "file_version_info_unittest.cc",
     "files/dir_reader_posix_unittest.cc",
     "files/file_path_unittest.cc",
     "files/file_proxy_unittest.cc",
     "files/file_unittest.cc",
     "files/file_util_proxy_unittest.cc",
     "files/file_util_unittest.cc",
@@ skipping 345 matching lines @@
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }