Stop using the TRACE_EVENT_*_ETW macros.

content/renderer/renderer_main.cc

 // Copyright (c) 2012 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.
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/debug/leak_annotations.h"
 #include "base/feature_list.h"
 #include "base/i18n/rtl.h"
@@ skipping 60 matching lines @@
 
 #if defined(USE_OZONE)
 base::LazyInstance<scoped_ptr<ui::ClientNativePixmapFactory>> g_pixmap_factory =
     LAZY_INSTANCE_INITIALIZER;
 #endif
 
 }  // namespace
 
 // mainline routine for running as the Renderer process
 int RendererMain(const MainFunctionParams& parameters) {
-  TRACE_EVENT_BEGIN_ETW("RendererMain", 0, "");
+  // Don't use the TRACE_EVENT0 macro because the tracing infrastructure doesn't
+  // expect synchronous events around the main loop of a thread.
+  TRACE_EVENT_ASYNC_BEGIN0("startup", "RendererMain", 0);
+
   base::trace_event::TraceLog::GetInstance()->SetProcessName("Renderer");
   base::trace_event::TraceLog::GetInstance()->SetProcessSortIndex(
       kTraceEventRendererProcessSortIndex);
 
   const base::CommandLine& parsed_command_line = parameters.command_line;
 
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool* pool = parameters.autorelease_pool;
 #endif  // OS_MACOSX
 
@@ skipping 105 matching lines @@
     RenderThreadImpl::Create(main_message_loop.Pass(),
                              renderer_scheduler.Pass());
 #endif
     base::HighResolutionTimerManager hi_res_timer_manager;
 
     if (run_loop) {
 #if defined(OS_MACOSX)
       if (pool)
         pool->Recycle();
 #endif
-      TRACE_EVENT_BEGIN_ETW("RendererMain.START_MSG_LOOP", 0, 0);
+      TRACE_EVENT_ASYNC_BEGIN0("toplevel", "RendererMain.START_MSG_LOOP", 0);
       base::MessageLoop::current()->Run();
-      TRACE_EVENT_END_ETW("RendererMain.START_MSG_LOOP", 0, 0);
+      TRACE_EVENT_ASYNC_END0("toplevel", "RendererMain.START_MSG_LOOP", 0);
     }
 #if defined(LEAK_SANITIZER)
     // Run leak detection before RenderProcessImpl goes out of scope. This helps
     // ignore shutdown-only leaks.
     __lsan_do_leak_check();
 #endif
   }
   platform.PlatformUninitialize();
-  TRACE_EVENT_END_ETW("RendererMain", 0, "");
+  TRACE_EVENT_ASYNC_END0("startup", "RendererMain", 0);
   return 0;
 }
 
 }  // namespace content