metrics: Add dbus interface for GetRandomPerfOutput

chrome/browser/metrics/windowed_incognito_observer.cc

Index: chrome/browser/metrics/windowed_incognito_observer.cc
diff --git a/chrome/browser/metrics/windowed_incognito_observer.cc b/chrome/browser/metrics/windowed_incognito_observer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c4a96cfd963c7d9c0bf5361ed2749cd34b763847
--- /dev/null
+++ b/chrome/browser/metrics/windowed_incognito_observer.cc
@@ -0,0 +1,27 @@
+// Copyright 2015 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/metrics/windowed_incognito_observer.h"
+
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_list.h"
+
+namespace metrics {
+
+WindowedIncognitoObserver::WindowedIncognitoObserver()
+    : incognito_launched_(false) {
+  BrowserList::AddObserver(this);
+}
+
+WindowedIncognitoObserver::~WindowedIncognitoObserver() {
+  BrowserList::RemoveObserver(this);
+}
+
+void WindowedIncognitoObserver::OnBrowserAdded(Browser* browser) {
+  if (browser->profile()->IsOffTheRecord())
+    incognito_launched_ = true;
+}
+
+}  // namespace metrics