Extract duplicated code in browser_tests for closing a browser.

chrome/browser/ui/settings_window_manager_browsertest.cc

Index: chrome/browser/ui/settings_window_manager_browsertest.cc
diff --git a/chrome/browser/ui/settings_window_manager_browsertest.cc b/chrome/browser/ui/settings_window_manager_browsertest.cc
index a551457c76738a1fb4f2d61132807cfb34aa972e..6491ae22bf305e5a6f3726b41128dec75abb0dc4 100644
--- a/chrome/browser/ui/settings_window_manager_browsertest.cc
+++ b/chrome/browser/ui/settings_window_manager_browsertest.cc
@@ -8,7 +8,6 @@
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
@@ -95,14 +94,6 @@ class SettingsWindowManagerTest : public InProcessBrowserTest {
         profile, GURL(chrome::kChromeUISettingsURL));
   }
 
-  void CloseBrowserSynchronously(Browser* browser) {
-    content::WindowedNotificationObserver observer(
-        chrome::NOTIFICATION_BROWSER_CLOSED,
-        content::NotificationService::AllSources());
-    browser->window()->Close();
-    observer.Wait();
-  }
-
   void CloseNonDefaultBrowsers() {
     std::list<Browser*> browsers_to_close;
     for (chrome::BrowserIterator it; !it.done(); it.Next()) {