Phase out BrowserList::empty() and BrowserList::size().

chrome/test/base/ui_test_utils.cc

Index: chrome/test/base/ui_test_utils.cc
diff --git a/chrome/test/base/ui_test_utils.cc b/chrome/test/base/ui_test_utils.cc
index 29b52362f8f493f671b388be5a1bc9a8ed7266f0..e0a1a880da10c0e0489d0cad8aec130370f687cf 100644
--- a/chrome/test/base/ui_test_utils.cc
+++ b/chrome/test/base/ui_test_utils.cc
@@ -530,7 +530,7 @@ 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());
+  EXPECT_EQ(original_browsers_.size() + 1, chrome::GetTotalBrowserCount());
   return GetBrowserNotInSet(original_browsers_);
 }