Add Startup.BrowserView.FirstPaint / .CompositingEnded histograms.

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"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
@@ skipping 804 matching lines @@
                                                                 &group_name)) {
     ChromeMetricsServiceAccessor::RegisterSyntheticFieldTrial(trial_name,
                                                               group_name);
   }
 
   g_browser_process->GetMetricsServicesManager()->UpdateUploadPermissions(true);
 }
 
 void ChromeBrowserMainParts::RecordBrowserStartupTime() {
   // Don't record any metrics if UI was displayed before this point e.g.
-  // warning dialogs.
-  if (startup_metric_utils::WasNonBrowserUIDisplayed())
+  // warning dialogs or browser was started in background mode.
+  if (startup_metric_utils::WasMainWindowStartupInterrupted())
     return;
 
   bool is_first_run = false;
 #if !defined(OS_ANDROID)
   // On Android, first run is handled in Java code, and the C++ side of Chrome
   // doesn't know if this is the first run. This will cause some inaccuracy in
   // the UMA statistics, but this should be minor (first runs are rare).
   is_first_run = first_run::IsChromeFirstRun();
 #endif  // defined(OS_ANDROID)
 
@@ skipping 1244 matching lines @@
   chromeos::CrosSettings::Shutdown();
 #endif  // defined(OS_CHROMEOS)
 #endif  // defined(OS_ANDROID)
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }