Merged all PointerToId functions into TraceHelper::PointerToString.

third_party/WebKit/Source/platform/BUILD.gn

 # 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("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//third_party/WebKit/public/public_features.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
@@ skipping 1264 matching lines @@
     "scheduler/base/task_queue_manager.h",
     "scheduler/base/task_queue_manager_delegate.h",
     "scheduler/base/task_queue_selector.cc",
     "scheduler/base/task_queue_selector.h",
     "scheduler/base/task_time_observer.h",
     "scheduler/base/thread_load_tracker.cc",
     "scheduler/base/thread_load_tracker.h",
     "scheduler/base/time_converter.h",
     "scheduler/base/time_domain.cc",
     "scheduler/base/time_domain.h",
+    "scheduler/base/trace_helper.cc",
+    "scheduler/base/trace_helper.h",
     "scheduler/base/virtual_time_domain.cc",
     "scheduler/base/virtual_time_domain.h",
     "scheduler/base/work_queue.cc",
     "scheduler/base/work_queue.h",
     "scheduler/base/work_queue_sets.cc",
     "scheduler/base/work_queue_sets.h",
     "scheduler/child/compositor_worker_scheduler.cc",
     "scheduler/child/compositor_worker_scheduler.h",
     "scheduler/child/idle_canceled_delayed_task_sweeper.cc",
     "scheduler/child/idle_canceled_delayed_task_sweeper.h",
@@ skipping 938 matching lines @@
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }