[Reland] Optimize blink scheduler with an intrusive heap

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/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/config.gni")
@@ skipping 1110 matching lines @@
     "plugins/PluginData.cpp",
     "plugins/PluginData.h",
     "plugins/PluginListBuilder.cpp",
     "plugins/PluginListBuilder.h",
     "scheduler/CancellableTaskFactory.cpp",
     "scheduler/CancellableTaskFactory.h",
     "scheduler/base/cancelable_closure_holder.cc",
     "scheduler/base/cancelable_closure_holder.h",
     "scheduler/base/enqueue_order.cc",
     "scheduler/base/enqueue_order.h",
+    "scheduler/base/intrusive_heap.h",
     "scheduler/base/lazy_now.cc",
     "scheduler/base/lazy_now.h",
     "scheduler/base/pollable_thread_safe_flag.cc",
     "scheduler/base/pollable_thread_safe_flag.h",
     "scheduler/base/queueing_time_estimator.cc",
     "scheduler/base/queueing_time_estimator.h",
     "scheduler/base/real_time_domain.cc",
     "scheduler/base/real_time_domain.h",
     "scheduler/base/task_queue_impl.cc",
     "scheduler/base/task_queue_impl.h",
@@ skipping 558 matching lines @@
     "mojo/CommonCustomTypesStructTraitsTest.cpp",
     "mojo/GeometryStructTraitsTest.cpp",
     "mojo/KURLSecurityOriginTest.cpp",
     "network/EncodedFormDataTest.cpp",
     "network/HTTPParsersTest.cpp",
     "network/LinkHeaderTest.cpp",
     "network/NetworkUtilsTest.cpp",
     "network/ResourceRequestTest.cpp",
     "network/ResourceResponseTest.cpp",
     "scheduler/CancellableTaskFactoryTest.cpp",
+    "scheduler/base/intrusive_heap_unittest.cc",
     "scheduler/base/queueing_time_estimator_unittest.cc",
     "scheduler/base/task_queue_manager_unittest.cc",
     "scheduler/base/task_queue_selector_unittest.cc",
     "scheduler/base/test_count_uses_time_source.cc",
     "scheduler/base/thread_load_tracker_unittest.cc",
     "scheduler/base/time_domain_unittest.cc",
     "scheduler/base/work_queue_sets_unittest.cc",
     "scheduler/base/work_queue_unittest.cc",
     "scheduler/child/idle_helper_unittest.cc",
     "scheduler/child/scheduler_helper_unittest.cc",
@@ skipping 255 matching lines @@
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":test_support",
     "//cc/surfaces:surface_id",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }