[Refactor] Replace kFullscreenUsesMinimalChromeKey with WindowState::hide_shelf_when_fullscreen()

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

Index: chrome/browser/ui/views/frame/immersive_mode_controller_ash.h
diff --git a/chrome/browser/ui/views/frame/immersive_mode_controller_ash.h b/chrome/browser/ui/views/frame/immersive_mode_controller_ash.h
index f26f801e257be4c6532c2f462305d3be3c479586..a074d68d8bbfbf6e68dbf9836a24f1030c3b6f3f 100644
--- a/chrome/browser/ui/views/frame/immersive_mode_controller_ash.h
+++ b/chrome/browser/ui/views/frame/immersive_mode_controller_ash.h
@@ -110,7 +110,6 @@ class ImmersiveModeControllerAsh : public ImmersiveModeController,
                                       aura::Window* transient) OVERRIDE;
 
   // Testing interface.
-  void SetForceHideTabIndicatorsForTest(bool force);
   void StartRevealForTest(bool hovered);
   void SetMouseHoveredForTest(bool hovered);
   void DisableAnimationsForTest();
@@ -137,11 +136,6 @@ class ImmersiveModeControllerAsh : public ImmersiveModeController,
     REVEALED,        // All views showing, y = 0.
     SLIDING_CLOSED,  // All views showing, y animating from 0 to -height.
   };
-  enum TabIndicatorVisibility {
-    TAB_INDICATORS_FORCE_HIDE,
-    TAB_INDICATORS_HIDE,
-    TAB_INDICATORS_SHOW
-  };
   enum SwipeType {
     SWIPE_OPEN,
     SWIPE_CLOSE,
@@ -258,10 +252,6 @@ class ImmersiveModeControllerAsh : public ImmersiveModeController,
 
   int revealed_lock_count_;
 
-  // The visibility of the miniature "tab indicators" in the main browser view
-  // when immersive mode is enabled and the top-of-window views are closed.
-  TabIndicatorVisibility tab_indicator_visibility_;
-
   // Timer to track cursor being held at the top edge of the screen.
   base::OneShotTimer<ImmersiveModeController> top_edge_hover_timer_;