Moves ImmersiveFullscreenController::SetupForTest into test class

chrome/browser/ui/views/frame/immersive_mode_controller_ash.h

 // Copyright 2012 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_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_ASH_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_ASH_H_
 
 #include <memory>
 
 #include "ash/common/wm/immersive/wm_immersive_fullscreen_controller_delegate.h"
@@ skipping 11 matching lines @@
 
 class ImmersiveModeControllerAsh
     : public ImmersiveModeController,
       public ash::WmImmersiveFullscreenControllerDelegate,
       public ash::wm::WindowStateObserver,
       public content::NotificationObserver {
  public:
   ImmersiveModeControllerAsh();
   ~ImmersiveModeControllerAsh() override;
 
+  ash::ImmersiveFullscreenController* controller() { return controller_.get(); }
+
   // ImmersiveModeController overrides:
   void Init(BrowserView* browser_view) override;
   void SetEnabled(bool enabled) override;
   bool IsEnabled() const override;
   bool ShouldHideTabIndicators() const override;
   bool ShouldHideTopViews() const override;
   bool IsRevealed() const override;
   int GetTopContainerVerticalOffset(
       const gfx::Size& top_container_size) const override;
   ImmersiveRevealedLock* GetRevealedLock(AnimateReveal animate_reveal) override
       WARN_UNUSED_RESULT;
   void OnFindBarVisibleBoundsChanged(
       const gfx::Rect& new_visible_bounds_in_screen) override;
-  void SetupForTest() override;
 
  private:
   // Enables or disables observers for window restore and entering / exiting
   // tab fullscreen.
   void EnableWindowObservers(bool enable);
 
   // Updates the browser root view's layout including window caption controls.
   void LayoutBrowserRootView();
 
   // Updates whether the tab strip is painted in a short "light bar" style.
@@ skipping 39 matching lines @@
   // the top-of-window views are not revealed regardless of
   // |use_tab_indicators_|.
   double visible_fraction_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ImmersiveModeControllerAsh);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_ASH_H_