[reland] Makes MaterialDesignController initialization explicit

chrome/browser/ui/toolbar/toolbar_actions_bar_unittest.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_BAR_UNITTEST_H_
 #define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_BAR_UNITTEST_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 88 matching lines @@
 
   // The overflow container's BrowserActionTestUtil (only non-null if
   // |use_redesign| is true).
   std::unique_ptr<BrowserActionTestUtil> overflow_browser_action_test_util_;
 
   // True if the extension action redesign switch should be enabled.
   bool use_redesign_;
 
   std::unique_ptr<extensions::FeatureSwitch::ScopedOverride> redesign_switch_;
 
+  std::unique_ptr<ui::test::MaterialDesignControllerTestAPI>
+      material_design_state_;
+
   DISALLOW_COPY_AND_ASSIGN(ToolbarActionsBarUnitTest);
 };
 
 class ToolbarActionsBarRedesignUnitTest : public ToolbarActionsBarUnitTest {
  public:
   ToolbarActionsBarRedesignUnitTest();
   ~ToolbarActionsBarRedesignUnitTest() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ToolbarActionsBarRedesignUnitTest);
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_BAR_UNITTEST_H_