[Extensions] Fix a bug in the startup pages override bubble

chrome/browser/ui/toolbar/toolbar_actions_bar_unittest.h

Index: chrome/browser/ui/toolbar/toolbar_actions_bar_unittest.h
diff --git a/chrome/browser/ui/toolbar/toolbar_actions_bar_unittest.h b/chrome/browser/ui/toolbar/toolbar_actions_bar_unittest.h
index c0cb619f61565579a5e70ab7c528de6dbaa73264..526afa89eeaa7fc6fa5bf048f95473101bf2cc12 100644
--- a/chrome/browser/ui/toolbar/toolbar_actions_bar_unittest.h
+++ b/chrome/browser/ui/toolbar/toolbar_actions_bar_unittest.h
@@ -16,6 +16,7 @@
 #include "ui/base/material_design/material_design_controller.h"
 
 class ExtensionAction;
+class ScopedTestingLocalState;
 class ToolbarActionsBar;
 
 namespace content {
@@ -99,6 +100,9 @@ class ToolbarActionsBarUnitTest :
   std::unique_ptr<ui::test::MaterialDesignControllerTestAPI>
       material_design_state_;
 
+  // Local state for the browser process.
+  std::unique_ptr<ScopedTestingLocalState> local_state_;
+
   DISALLOW_COPY_AND_ASSIGN(ToolbarActionsBarUnitTest);
 };