cros-md: Remove the non-MD immersive mode code paths

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/window_state_observer.h"
@@ skipping 21 matching lines @@
  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;
   views::Widget* GetRevealWidget() 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.
-  // Returns true if the visibility of the tab indicators has changed.
-  bool UpdateTabIndicators();
-
   // Used when running in mash to create |mash_reveal_widget_|. Does nothing
   // if already null.
   void CreateMashRevealWidget();
 
   // Destroys |mash_reveal_widget_| if valid, does nothing otherwise.
   void DestroyMashRevealWidget();
 
   // ImmersiveFullscreenController::Delegate overrides:
   void OnImmersiveRevealStarted() override;
   void OnImmersiveRevealEnded() override;
@@ skipping 18 matching lines @@
   std::unique_ptr<ash::ImmersiveFullscreenController> controller_;
 
   // Not owned.
   BrowserView* browser_view_;
   aura::Window* native_window_;
 
   // True if the observers for window restore and entering / exiting tab
   // fullscreen are enabled.
   bool observers_enabled_;
 
-  // Whether a short "light bar" version of the tab strip should be painted when
-  // the top-of-window views are closed. If |use_tab_indicators_| is false, the
-  // tab strip is not painted at all when the top-of-window views are closed.
-  bool use_tab_indicators_;
-
   // The current visible bounds of the find bar, in screen coordinates. This is
   // an empty rect if the find bar is not visible.
   gfx::Rect find_bar_visible_bounds_in_screen_;
 
   // The fraction of the TopContainerView's height which is visible. Zero when
-  // the top-of-window views are not revealed regardless of
-  // |use_tab_indicators_|.
+  // the top-of-window views are not revealed.
   double visible_fraction_;
 
   // When running in mash a widget is created to draw the top container. This
   // widget does not actually contain the top container, it just renders it.
   std::unique_ptr<views::Widget> mash_reveal_widget_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ImmersiveModeControllerAsh);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_ASH_H_