Stop using the TRACE_EVENT_*_ETW macros.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 998e05bc4df3d78f332229deb29ad6c0dd522904..534b0b6b9c2e2a335004101143d7e41ea667765c 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -554,7 +554,7 @@ RenderThreadImpl::RenderThreadImpl(
 }
 
 void RenderThreadImpl::Init() {
-  TRACE_EVENT_BEGIN_ETW("RenderThreadImpl::Init", 0, "");
+  TRACE_EVENT0("startup", "RenderThreadImpl::Init");
 
   base::trace_event::TraceLog::GetInstance()->SetThreadSortIndex(
       base::PlatformThread::CurrentId(),
@@ -761,8 +761,6 @@ void RenderThreadImpl::Init() {
       base::Bind(CreateRenderFrameSetup));
   service_registry()->AddService<EmbeddedWorkerSetup>(
       base::Bind(CreateEmbeddedWorkerSetup));
-
-  TRACE_EVENT_END_ETW("RenderThreadImpl::Init", 0, "");

[brucedawson, 2015/10/07 19:04:23]

Why is this call being removed completely?

[fdoray, 2015/10/08 15:38:26]

TRACE_EVENT0 emits a synchronous event with a start and end time. The end time
is taken at the end of the scope that contains the TRACE_EVENT0 macro. We don't
need and end event here, because we will get the end time of "RenderThreadImpl"
from the event emitted by TRACE_EVENT0.

At other places in this CL, I didn't use TRACE_EVENT0 because the tracing
infrastructure doesn't expect synchronous events around the main loop of a
thread. Here, it's ok to use TRACE_EVENT0 because we are not around a message
loop.

 }
 
 RenderThreadImpl::~RenderThreadImpl() {