[Extensions] Introduce a ScopedExtensionDialogAutoConfirm

chrome/browser/infobars/infobars_browsertest.cc

Index: chrome/browser/infobars/infobars_browsertest.cc
diff --git a/chrome/browser/infobars/infobars_browsertest.cc b/chrome/browser/infobars/infobars_browsertest.cc
index 175022b8c700ce9bab3b60b9c705d9c293a2b9fa..cd000ff6672dfb9d9c3328095b80a374fe8a2dcc 100644
--- a/chrome/browser/infobars/infobars_browsertest.cc
+++ b/chrome/browser/infobars/infobars_browsertest.cc
@@ -18,6 +18,7 @@
 #include "chrome/test/base/test_switches.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/notification_service.h"
+#include "extensions/browser/extension_dialog_auto_confirm.h"
 #include "extensions/browser/extension_system.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 
@@ -48,8 +49,9 @@ class InfoBarsTest : public InProcessBrowserTest {
 };
 
 IN_PROC_BROWSER_TEST_F(InfoBarsTest, TestInfoBarsCloseOnNewTheme) {
-  ExtensionInstallPrompt::g_auto_confirm_for_tests =
-      ExtensionInstallPrompt::ACCEPT;
+  extensions::ScopedExtensionDialogAutoConfirm auto_confirm(
+      &extensions::g_auto_confirm_install_for_testing,
+      extensions::AUTO_CONFIRM_ACCEPT);
 
 #if defined(OS_WIN) && defined(USE_ASH)
   // Disable this test in Metro+Ash for now (http://crbug.com/262796).