Cache the Windows Parental Controls Platform Answer

chrome/browser/ui/toolbar/back_forward_menu_model_unittest.cc

Index: chrome/browser/ui/toolbar/back_forward_menu_model_unittest.cc
diff --git a/chrome/browser/ui/toolbar/back_forward_menu_model_unittest.cc b/chrome/browser/ui/toolbar/back_forward_menu_model_unittest.cc
index e5d8746aa0eee3d03f23582ebe319edba9e53b50..f0fc95451445d526fe9fc8934aa8a79acfc9e028 100644
--- a/chrome/browser/ui/toolbar/back_forward_menu_model_unittest.cc
+++ b/chrome/browser/ui/toolbar/back_forward_menu_model_unittest.cc
@@ -11,6 +11,7 @@
 #include "chrome/browser/favicon/favicon_service_factory.h"
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/history_service_factory.h"
+#include "chrome/browser/prefs/incognito_mode_prefs.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
@@ -61,6 +62,15 @@ class FaviconDelegate : public ui::MenuModelDelegate {
 
 class BackFwdMenuModelTest : public ChromeRenderViewHostTestHarness {
  public:
+  static void SetUpTestCase() {
+    // Creating a browser requires platform parental controls initialization.
+    IncognitoModePrefs::InitializePlatformParentalControls();
+  }
+
+  static void TearDownTestCase() {
+    IncognitoModePrefs::UninitializePlatformParentalControls();
+  }
+
   void ValidateModel(BackForwardMenuModel* model, int history_items,
                      int chapter_stops) {
     int h = std::min(BackForwardMenuModel::kMaxHistoryItems, history_items);