Add option to export tracing events to ETW.

content/app/content_main_runner.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 "content/public/app/content_main_runner.h"
 
 #include <stdlib.h>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/at_exit.h"
@@ skipping 59 matching lines @@
 #include "content/public/plugin/content_plugin_client.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/public/utility/content_utility_client.h"
 #endif
 
 #if defined(OS_WIN)
 #include <malloc.h>
 #include <cstring>
 
 #include "base/strings/string_number_conversions.h"
+#include "base/trace_event/trace_event_etw_export_win.h"
 #include "ui/base/win/atl_module.h"
 #include "ui/gfx/win/dpi.h"
 #elif defined(OS_MACOSX)
 #include "base/mac/scoped_nsautorelease_pool.h"
 #if !defined(OS_IOS)
 #include "base/power_monitor/power_monitor_device_source.h"
 #include "content/browser/mach_broker_mac.h"
 #include "content/common/sandbox_init_mac.h"
 #endif  // !OS_IOS
 #endif  // OS_WIN
@@ skipping 535 matching lines @@
     // ignored.
     if (command_line.HasSwitch(switches::kTraceStartup)) {
       base::trace_event::CategoryFilter category_filter(
           command_line.GetSwitchValueASCII(switches::kTraceStartup));
       base::trace_event::TraceLog::GetInstance()->SetEnabled(
           category_filter,
           base::trace_event::TraceLog::RECORDING_MODE,
           base::trace_event::TraceOptions(
               base::trace_event::RECORD_UNTIL_FULL));
     }
+#if defined(OS_WIN)
+    // Enable exporting of events to ETW if requested on the command line.
+    if (command_line.HasSwitch(switches::kTraceExportEventsToETW))
+      base::trace_event::TraceEventETWExport::EnableETWExport();
+#endif  // OS_WIN
+
 #if !defined(OS_ANDROID)
     // Android tracing started at the beginning of the method.
     // Other OSes have to wait till we get here in order for all the memory
     // management setup to be completed.
     TRACE_EVENT0("startup", "ContentMainRunnerImpl::Initialize");
 #endif // !OS_ANDROID
 
 #if defined(OS_MACOSX) && !defined(OS_IOS)
     // We need to allocate the IO Ports before the Sandbox is initialized or
     // the first instance of PowerMonitor is created.
@@ skipping 188 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ContentMainRunnerImpl);
 };
 
 // static
 ContentMainRunner* ContentMainRunner::Create() {
   return new ContentMainRunnerImpl();
 }
 
 }  // namespace content