Remove "Alternate frame caption button style" command line flag

ash/ash_switches.h

Index: ash/ash_switches.h
diff --git a/ash/ash_switches.h b/ash/ash_switches.h
index 8ad2ec6ac0d1872fdc938ae7d7363d242403ee76..e1be504d298c9d8d584b05fab8170675ea07e9d3 100644
--- a/ash/ash_switches.h
+++ b/ash/ash_switches.h
@@ -24,10 +24,8 @@ ASH_EXPORT extern const char kAshDebugShortcuts[];
 ASH_EXPORT extern const char kAshDefaultWallpaperIsOem[];
 ASH_EXPORT extern const char kAshDefaultWallpaperLarge[];
 ASH_EXPORT extern const char kAshDefaultWallpaperSmall[];
-ASH_EXPORT extern const char kAshDisableAlternateFrameCaptionButtonStyle[];
 ASH_EXPORT extern const char kAshDisableDockedWindows[];
 ASH_EXPORT extern const char kAshEnableTouchExplorationMode[];
-ASH_EXPORT extern const char kAshEnableAlternateFrameCaptionButtonStyle[];
 #if defined(OS_CHROMEOS)
 ASH_EXPORT extern const char kAshEnableMagnifierKeyScroller[];
 #endif
@@ -47,10 +45,6 @@ ASH_EXPORT extern const char kAuraLegacyPowerButton[];
 ASH_EXPORT extern const char kForceAshToDesktop[];
 #endif
 
-// Returns true if the alternate visual style for the caption buttons (minimize,
-// maximize, restore, close) should be used.
-ASH_EXPORT bool UseAlternateFrameCaptionButtonStyle();
-
 // Returns true if items can be dragged off the shelf to unpin.
 ASH_EXPORT bool UseDragOffShelf();