1 files changed, 17 insertions, 0 deletions
diff --git a/chrome/test/base/ui_test_utils.cc b/chrome/test/base/ui_test_utils.cc
index 6b7b318..441c81e 100644
--- a/chrome/test/base/ui_test_utils.cc
+++ b/chrome/test/base/ui_test_utils.cc
@@ -976,6 +976,23 @@ void TitleWatcher::AlsoWaitForTitle(const string16& expected_title) {
 TitleWatcher::~TitleWatcher() {
 }
 
+BrowserAddedObserver::BrowserAddedObserver()
+    : notification_observer_(
+          chrome::NOTIFICATION_BROWSER_OPENED,
+          content::NotificationService::AllSources()) {
+  original_browsers_.insert(BrowserList::begin(), BrowserList::end());
+}
+
+BrowserAddedObserver::~BrowserAddedObserver() {
+}
+
+Browser* BrowserAddedObserver::WaitForSingleNewBrowser() {
+  notification_observer_.Wait();
+  // Ensure that only a single new browser has appeared.
+  EXPECT_EQ(original_browsers_.size() + 1, BrowserList::size());
+  return GetBrowserNotInSet(original_browsers_);
+}
+
 const string16& TitleWatcher::WaitAndGetTitle() {
   if (expected_title_observed_)
     return observed_title_;