Record first run startup metrics.

chrome/browser/chrome_browser_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 "chrome/browser/chrome_browser_main.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 1607 matching lines @@
   return true;
 #else
   // Set the result code set in PreMainMessageLoopRun or set above.
   *result_code = result_code_;
   if (!run_message_loop_)
     return true;  // Don't run the default message loop.
 
   // These should be invoked as close to the start of the browser's
   // UI thread message loop as possible to get a stable measurement
   // across versions.
-  RecordBrowserStartupTime();
+  RecordBrowserStartupTime(do_first_run_tasks_);
   startup_timer_->SignalStartupComplete(
       performance_monitor::StartupTimer::STARTUP_NORMAL);
 
   DCHECK_EQ(MessageLoop::TYPE_UI, MessageLoop::current()->type());
 #if !defined(USE_AURA) && defined(TOOLKIT_VIEWS)
   views::AcceleratorHandler accelerator_handler;
   base::RunLoop run_loop(&accelerator_handler);
 #else
   base::RunLoop run_loop;
 #endif
@@ skipping 100 matching lines @@
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }
 
 // Misc ------------------------------------------------------------------------
 
-void RecordBrowserStartupTime() {
+void RecordBrowserStartupTime(bool is_first_run) {
   // Don't record any metrics if UI was displayed before this point e.g.
   // warning dialogs.
   if (startup_metric_utils::WasNonBrowserUIDisplayed())
     return;
 
 // CurrentProcessInfo::CreationTime() is currently only implemented on Mac and
 // Windows.
 #if defined(OS_MACOSX) || defined(OS_WIN)
   const base::Time* process_creation_time =
       base::CurrentProcessInfo::CreationTime();
 
-  if (process_creation_time)
+  if (!is_first_run && process_creation_time) {
     RecordPreReadExperimentTime("Startup.BrowserMessageLoopStartTime",
         base::Time::Now() - *process_creation_time);
+  }
 #endif  // defined(OS_MACOSX) || defined(OS_WIN)
 
   // Record collected startup metrics.
-  startup_metric_utils::OnBrowserStartupComplete();
+  startup_metric_utils::OnBrowserStartupComplete(is_first_run);
 
   // Deletes self.
   new LoadCompleteListener();
 }
 
 // This code is specific to the Windows-only PreReadExperiment field-trial.
 void RecordPreReadExperimentTime(const char* name, base::TimeDelta time) {
   DCHECK(name != NULL);
 
   // This gets called with different histogram names, so we don't want to use
@@ skipping 17 matching lines @@
     if (base::win::GetVersion() <= base::win::VERSION_XP)
       uma_name += "_XP";
 
     uma_name += "_PreRead_";
     uma_name += pre_read_percentage;
     AddPreReadHistogramTime(uma_name.c_str(), time);
   }
 #endif
 #endif
 }