Only support left/right maximizing at 50% width when the --ash-enable-alternate-caption-button

ash/ash_switches.h

 // Copyright (c) 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 ASH_ASH_SWITCHES_H_
 #define ASH_ASH_SWITCHES_H_
 
 #include "ash/ash_export.h"
 
 #include "build/build_config.h"
@@ skipping 12 matching lines @@
 ASH_EXPORT extern const char kAshDebugShortcuts[];
 ASH_EXPORT extern const char kAshDebugShowPreferredNetworks[];
 ASH_EXPORT extern const char kAshDefaultGuestWallpaperLarge[];
 ASH_EXPORT extern const char kAshDefaultGuestWallpaperSmall[];
 ASH_EXPORT extern const char kAshDefaultWallpaperLarge[];
 ASH_EXPORT extern const char kAshDefaultWallpaperSmall[];
 ASH_EXPORT extern const char kAshDisableAlternateShelfLayout[];
 #if defined(OS_CHROMEOS)
 ASH_EXPORT extern const char kAshDisableAudioDeviceMenu[];
 #endif
+ASH_EXPORT extern const char kAshDisableAlternateFrameCaptionButtonStyle[];
 ASH_EXPORT extern const char kAshDisableAutoMaximizing[];
 ASH_EXPORT extern const char kAshDisableDisplayChangeLimiter[];
 ASH_EXPORT extern const char kAshDisableDragOffShelf[];
 ASH_EXPORT extern const char kAshDisableImmersiveFullscreen[];
 ASH_EXPORT extern const char kAshDisableNewLockAnimations[];
 ASH_EXPORT extern const char kAshDisableOverviewMode[];
 ASH_EXPORT extern const char kAshDisableDragAndDropAppListToLauncher[];
 #if defined(OS_CHROMEOS)
 ASH_EXPORT extern const char kAshDisableSoftwareMirroring[];
 ASH_EXPORT extern const char kAshDisableUsbChargerNotification[];
 ASH_EXPORT extern const char kAshEnableAudioDeviceMenu[];
 #endif
 ASH_EXPORT extern const char kAshEnableAdvancedGestures[];
+ASH_EXPORT extern const char kAshEnableAlternateFrameCaptionButtonStyle[];
 ASH_EXPORT extern const char kAshEnableBrightnessControl[];
 ASH_EXPORT extern const char kAshEnableDockedWindows[];
 #if defined(OS_LINUX)
 ASH_EXPORT extern const char kAshEnableMemoryMonitor[];
 #endif
 ASH_EXPORT extern const char kAshEnableImmersiveFullscreen[];
 ASH_EXPORT extern const char kAshEnableOak[];
 ASH_EXPORT extern const char kAshEnableStickyEdges[];
 ASH_EXPORT extern const char kAshEnableTrayDragging[];
 ASH_EXPORT extern const char kAshForceMirrorMode[];
 ASH_EXPORT extern const char kAshHideNotificationsForFactory[];
 ASH_EXPORT extern const char kAshHostWindowBounds[];
 ASH_EXPORT extern const char kAshImmersiveHideTabIndicators[];
 ASH_EXPORT extern const char kAshSecondaryDisplayLayout[];
 ASH_EXPORT extern const char kAshTouchHud[];
 ASH_EXPORT extern const char kAshUseAlternateShelfLayout[];
 ASH_EXPORT extern const char kAshUseFirstDisplayAsInternal[];
 ASH_EXPORT extern const char kAuraLegacyPowerButton[];
 #if defined(OS_WIN)
 ASH_EXPORT extern const char kForceAshToDesktop[];
 #endif
 ASH_EXPORT extern const char kForcedMaximizeMode[];
 
 ASH_EXPORT extern const char kShowShelfAlignmentMenu[];
 ASH_EXPORT extern const char kHideShelfAlignmentMenu[];
 
+// 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 the alternate shelf layout should be used.
 ASH_EXPORT bool UseAlternateShelfLayout();
 
 // Returns true if items can be dragged off the shelf to unpin.
 ASH_EXPORT bool UseDragOffShelf();
 
 // Returns true if side shelf alignment is enabled.
 ASH_EXPORT bool ShowShelfAlignmentMenu();
 
 #if defined(OS_CHROMEOS)
 // Returns true if new audio handler should be used.
 ASH_EXPORT bool UseNewAudioHandler();
 
 // Returns true if we should show the audio device switching UI.
 ASH_EXPORT bool ShowAudioDeviceMenu();
 
 // Returns true if a notification should appear when a low-power USB charger
 // is connected.
 ASH_EXPORT bool UseUsbChargerNotification();
 #endif
 
 }  // namespace switches
 }  // namespace ash
 
 #endif  // ASH_ASH_SWITCHES_H_