Adding shutdown tracing capabilities

chrome/browser/browser_shutdown.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 "chrome/browser/browser_shutdown.h"
 
 #include <map>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 72 matching lines @@
 }
 
 ShutdownType GetShutdownType() {
   return shutdown_type_;
 }
 
 void OnShutdownStarting(ShutdownType type) {
   if (shutdown_type_ != NOT_VALID)
     return;
 
+#if !defined(OS_CHROMEOS)
+  // Start the shutdown tracing. Note that On ChromeOS we have started this
+  // already.
+  chrome::StartShutdownTracing();
+#endif
+
   shutdown_type_ = type;
   // For now, we're only counting the number of renderer processes
   // since we can't safely count the number of plugin processes from this
   // thread, and we'd really like to avoid anything which might add further
   // delays to shutdown time.
   DCHECK(!shutdown_started_);
   shutdown_started_ = new Time(Time::Now());
 
   // Call FastShutdown on all of the RenderProcessHosts.  This will be
   // a no-op in some cases, so we still need to go through the normal
@@ skipping 223 matching lines @@
 
 bool ShuttingDownWithoutClosingBrowsers() {
   return g_shutting_down_without_closing_browsers;
 }
 
 void SetShuttingDownWithoutClosingBrowsers(bool without_close) {
   g_shutting_down_without_closing_browsers = without_close;
 }
 
 }  // namespace browser_shutdown