Remove ash::switches::UseImmersiveFullscreenForAllWindows()

ash/ash_switches.h

Index: ash/ash_switches.h
diff --git a/ash/ash_switches.h b/ash/ash_switches.h
index 7dae4e0f58a2896c5220995fef55ddc84f3ebea9..80ab2dbdb6f722ad86d581186d2255fbafe0aef4 100644
--- a/ash/ash_switches.h
+++ b/ash/ash_switches.h
@@ -29,8 +29,6 @@ ASH_EXPORT extern const char kAshDisableAlternateShelfLayout[];
 ASH_EXPORT extern const char kAshDisableDockedWindows[];
 ASH_EXPORT extern const char kAshEnableAlternateFrameCaptionButtonStyle[];
 ASH_EXPORT extern const char kAshEnableBrightnessControl[];
-ASH_EXPORT extern const char kAshEnableImmersiveFullscreenForAllWindows[];
-ASH_EXPORT extern const char kAshEnableImmersiveFullscreenForBrowserOnly[];
 #if defined(OS_CHROMEOS)
 ASH_EXPORT extern const char kAshEnableMagnifierKeyScroller[];
 ASH_EXPORT extern const char kAshEnableMultiUserTray[];
@@ -62,10 +60,6 @@ ASH_EXPORT bool UseAlternateShelfLayout();
 // Returns true if items can be dragged off the shelf to unpin.
 ASH_EXPORT bool UseDragOffShelf();
 
-// Returns true if all windows (barring frameless apps) can be put into
-// immersive fullscreen via <F4>.
-ASH_EXPORT bool UseImmersiveFullscreenForAllWindows();
-
 // Returns true if docked windows feature is enabled.
 ASH_EXPORT bool UseDockedWindows();