Add a histogram to measure browser window display

chrome/common/startup_metric_utils.cc

Index: chrome/common/startup_metric_utils.cc
diff --git a/chrome/common/startup_metric_utils.cc b/chrome/common/startup_metric_utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..272620d46c03d8d7f28cdd7ab53eff61f9834bd1
--- /dev/null
+++ b/chrome/common/startup_metric_utils.cc
@@ -0,0 +1,24 @@
+// 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/common/startup_metric_utils.h"
+
+namespace {
+
+bool* NonBrowserUIDisplayed() {

[sky, 2012/07/25 15:51:48]

Why go through a function here? Move non_browser_ui_displayed outside the
function.

[jeremy, 2012/07/26 12:57:26]

Done.

+  static bool non_browser_ui_displayed = false;
+  return &non_browser_ui_displayed;
+}
+
+}  // namespace
+
+// static
+bool StartupMetricUtils::WasNonBrowserUIDisplayed() {
+  return *(NonBrowserUIDisplayed());
+}
+
+// static
+void StartupMetricUtils::SetNonBrowserUIDisplayed() {
+  *(NonBrowserUIDisplayed()) = true;
+}