This reverts commit caed2cc0.

Reason for revert: Breaks layout tests, e.g.

https://test-results.appspot.com/data/layout_results/V8-Blink_Linux_64__dbg_/14924/webkit_layout_tests%20%28with%20patch%29/layout-test-results/results.html

crash log for renderer (pid <unknown>):
STDOUT: <empty>
STDERR: 
STDERR: 
STDERR: #
STDERR: # Fatal error in ../../v8/src/base/platform/elapsed-timer.h, line 24
STDERR: # Debug check failed: !IsStarted().
STDERR: #
STDERR: #
STDERR: #
STDERR: #FailureMessage Object: 0x7ffc46707640#0 0x565409263b6f base::debug::StackTrace::StackTrace()
STDERR: #1 0x56540a8a32fb gin::(anonymous namespace)::PrintStackTrace()
STDERR: #2 0x56540a8980d8 V8_Fatal()
STDERR: #3 0x56540a897e35 v8::base::(anonymous namespace)::DefaultDcheckHandler()
STDERR: #4 0x565407971f02 v8::base::ElapsedTimer::Start()
STDERR: #5 0x565407d08edf v8::internal::TimedHistogram::Start()
STDERR: #6 0x565407e500d5 v8::internal::IncrementalMarking::AdvanceIncrementalMarkingOnAllocation()
STDERR: #7 0x565407e4f977 v8::internal::IncrementalMarking::Observer::Step()
STDERR: #8 0x565407e48092 v8::internal::AllocationObserver::AllocationStep()
STDERR: #9 0x565407eb0751 v8::internal::SpaceWithLinearArea::InlineAllocationStep()
STDERR: #10 0x565407eb3e44 v8::internal::NewSpace::EnsureAllocation()
STDERR: #11 0x565407e258ff v8::internal::NewSpace::AllocateRaw()
STDERR: #12 0x565407e06b2d v8::internal::Heap::AllocateRaw()
STDERR: #13 0x565407e432ef v8::internal::Heap::AllocateRawWithLightRetry()
STDERR: #14 0x565407e433cf v8::internal::Heap::AllocateRawWithRetryOrFail()
STDERR: #15 0x565407e04d48 v8::internal::Factory::NewFixedArrayWithFiller()
STDERR: #16 0x565407fd6339 v8::internal::HashTable<>::New()
STDERR: #17 0x565407fd7be8 v8::internal::HashTable<>::EnsureCapacity()
STDERR: #18 0x565407fc7e95 v8::internal::Dictionary<>::Add()
STDERR: #19 0x565407fcf453 v8::internal::BaseNameDictionary<>::Add()
STDERR: #20 0x565407f89ee4 v8::internal::LookupIterator::ApplyTransitionToDataProperty()
STDERR: #21 0x5654080036e2 v8::internal::Object::AddDataProperty()
STDERR: #22 0x56540793061f v8::internal::(anonymous namespace)::DefineDataProperty()
STDERR: #23 0x56540792da59 v8::internal::(anonymous namespace)::InstantiateObject()
STDERR: #24 0x56540792b75a v8::internal::(anonymous namespace)::InstantiateFunction()
STDERR: #25 0x56540792b4db v8::internal::ApiNatives::InstantiateFunction()
STDERR: #26 0x5654079594bf v8::FunctionTemplate::GetFunction()
STDERR: #27 0x56540a7af74e blink::V8ObjectConstructor::CreateInterfaceObject()
STDERR: #28 0x56540a7afe01 blink::V8PerContextData::ConstructorForTypeSlowCase()
STDERR: #29 0x56540a7afdd6 blink::V8PerContextData::ConstructorForTypeSlowCase()
STDERR: #30 0x56540a7afdd6 blink::V8PerContextData::ConstructorForTypeSlowCase()
STDERR: #31 0x56540a7afcb4 blink::V8PerContextData::CreateWrapperFromCacheSlowCase()
STDERR: #32 0x56540a7aef73 blink::V8DOMWrapper::CreateWrapper()
STDERR: #33 0x56540a7abf6b blink::ScriptWrappable::Wrap()
STDERR: #34 0x56540a677199 blink::V8Document::documentElementAttributeGetterCallback()
STDERR: #35 0x565407a0aec3 v8::internal::FunctionCallbackArguments::Call()
STDERR: #36 0x565407a097be v8::internal::(anonymous namespace)::HandleApiCallHelper<>()
STDERR: #37 0x565407a0877b v8::internal::Builtins::InvokeApiFunction()
STDERR: #38 0x565407fe785a v8::internal::Object::GetPropertyWithAccessor()
STDERR: #39 0x565407fe697e v8::internal::Object::GetProperty()
STDERR: #40 0x565407ec8c71 v8::internal::LoadIC::Load()
STDERR: #41 0x565407ed6401 v8::internal::__RT_impl_Runtime_LoadIC_Miss()
STDERR: #42 0x5654087593f2 <unknown>
STDERR: [16162:16185:1122/143518.356897:WARNING:crash_handler_host_linux.cc(341)] Could not translate tid, attempt = 1 retry ...


Original change's description:
> [heap] Improve embedder tracing during incremental marking
> 
> Add a path into embedder tracing on allocation. This is safe as as Blink
> is not allowed to call into V8 during object construction.
> 
> Bug: chromium:843903
> Change-Id: I5af053c3169f5a33778ebce5d7c5c43e4efb1aa4
> Reviewed-on: https://chromium-review.googlesource.com/c/1348749
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#57757}

TBR=ulan@chromium.org,mlippautz@chromium.org

Change-Id: Ide2c0b284b52bee17573adcc89f14be4e40dab91
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:843903
Reviewed-on: https://chromium-review.googlesource.com/c/1349189Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57759}