[Extensions] Introduce a ScopedExtensionDialogAutoConfirm

chrome/browser/policy/policy_browsertest.cc

Index: chrome/browser/policy/policy_browsertest.cc
diff --git a/chrome/browser/policy/policy_browsertest.cc b/chrome/browser/policy/policy_browsertest.cc
index f6b39f1accd13b114e9ba7d0a3ce3865d58fe8a5..3d0999919c1ef942387a86ada7b38144041e6809 100644
--- a/chrome/browser/policy/policy_browsertest.cc
+++ b/chrome/browser/policy/policy_browsertest.cc
@@ -133,6 +133,7 @@
 #include "content/public/test/mock_notification_observer.h"
 #include "content/public/test/test_navigation_observer.h"
 #include "content/public/test/test_utils.h"
+#include "extensions/browser/extension_dialog_auto_confirm.h"
 #include "extensions/browser/extension_host.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
@@ -1955,8 +1956,9 @@ IN_PROC_BROWSER_TEST_F(PolicyTest, ExtensionAllowedTypes) {
 #define MAYBE_ExtensionInstallSources ExtensionInstallSources
 #endif
 IN_PROC_BROWSER_TEST_F(PolicyTest, MAYBE_ExtensionInstallSources) {
-  ExtensionInstallPrompt::g_auto_confirm_for_tests =
-      ExtensionInstallPrompt::ACCEPT;
+  extensions::ScopedExtensionDialogAutoConfirm auto_confirm(
+      &extensions::g_auto_confirm_install_for_testing,
+      extensions::AUTO_CONFIRM_ACCEPT);
 
   const GURL install_source_url(URLRequestMockHTTPJob::GetMockUrl(
       base::FilePath(FILE_PATH_LITERAL("extensions/*"))));