Use chromium trace_event implementation in blink

third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 20 matching lines @@
 #include "platform/testing/TestingPlatformSupport.h"
 
 #include "base/command_line.h"
 #include "base/memory/discardable_memory_allocator.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/test/icu_test_util.h"
 #include "base/test/test_discardable_memory_allocator.h"
 #include "cc/blink/web_compositor_support_impl.h"
 #include "cc/test/ordered_simple_task_runner.h"
-#include "platform/EventTracer.h"
 #include "platform/HTTPNames.h"
 #include "platform/heap/Heap.h"
 #include "platform/scheduler/base/test_time_source.h"
 #include "platform/scheduler/child/scheduler_tqm_delegate_for_test.h"
 #include "platform/scheduler/renderer/renderer_scheduler_impl.h"
 #include "wtf/CryptographicallyRandomNumber.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/PtrUtil.h"
 #include "wtf/WTF.h"
 #include "wtf/allocator/Partitions.h"
@@ skipping 195 matching lines @@
     WTF::setTimeFunctionsForTesting(dummyCurrentTime);
     WTF::initialize(nullptr);
 
     m_compositorSupport = wrapUnique(new cc_blink::WebCompositorSupportImpl);
     m_testingPlatformConfig.compositorSupport = m_compositorSupport.get();
     m_testingPlatformSupport = wrapUnique(new TestingPlatformSupport(m_testingPlatformConfig));
 
     ProcessHeap::init();
     ThreadState::attachMainThread();
     ThreadState::current()->registerTraceDOMWrappers(nullptr, nullptr, nullptr, nullptr);
-    EventTracer::initialize();
     HTTPNames::init();
 }
 
 ScopedUnittestsEnvironmentSetup::~ScopedUnittestsEnvironmentSetup()
 {
 }
 
 } // namespace blink