Adding instrumentation to locate the source of jankiness.

chrome/common/service_process_util_win.cc

 // Copyright (c) 2011 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/common/service_process_util.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 49 matching lines @@
     DCHECK(event_name.length() <= MAX_PATH);
     terminate_event_.Set(CreateEvent(NULL, TRUE, FALSE, event_name.c_str()));
     watcher_.StartWatching(terminate_event_.Get(), this);
   }
 
   // base::ObjectWatcher::Delegate implementation.
   virtual void OnObjectSignaled(HANDLE object) {
     // TODO(vadimt): Remove ScopedTracker below once crbug.com/418183 is fixed.
     tracked_objects::ScopedTracker tracking_profile(
         FROM_HERE_WITH_EXPLICIT_FUNCTION(
-            "ServiceProcessTerminateMonitor_OnObjectSignaled"));
+            "418183 ServiceProcessTerminateMonitor::OnObjectSignaled"));
 
     if (!terminate_task_.is_null()) {
       terminate_task_.Run();
       terminate_task_.Reset();
     }
   }
 
  private:
   base::win::ScopedHandle terminate_event_;
   base::win::ObjectWatcher watcher_;
@@ skipping 93 matching lines @@
       HKEY_CURRENT_USER,
       base::UTF8ToWide(GetObsoleteServiceProcessAutoRunKey()));
   return base::win::RemoveCommandFromAutoRun(
       HKEY_CURRENT_USER, base::UTF8ToWide(GetServiceProcessAutoRunKey()));
 }
 
 void ServiceProcessState::TearDownState() {
   delete state_;
   state_ = NULL;
 }