[ash-md] Erases the pre-MD code path for Overview Mode

ash/common/ash_switches.cc

Index: ash/common/ash_switches.cc
diff --git a/ash/common/ash_switches.cc b/ash/common/ash_switches.cc
index adeee96e3ef3305022e65cd022f3c37f235839e4..a21f0e94f5df724e60a97a24302462e9b9b4d1e4 100644
--- a/ash/common/ash_switches.cc
+++ b/ash/common/ash_switches.cc
@@ -73,13 +73,6 @@ const char kAshEnableTouchView[] = "enable-touchview";
 // Enables mirrored screen.
 const char kAshEnableMirroredScreen[] = "ash-enable-mirrored-screen";
 
-// Enables / disables a stable order between overview sessions, independent of
-// the MRU order which attempts to preserve relative window positions.
-const char kAshDisableStableOverviewOrder[] =
-    "ash-disable-stable-overview-order";
-const char kAshEnableStableOverviewOrder[] = "ash-enable-stable-overview-order";
-
-
 // Enables touch view testing.
 // TODO(skuhne): Remove DEBUG_TOGGLE_TOUCH_VIEW accelerator once this flag is
 // removed.
@@ -97,16 +90,6 @@ const char kAshMaterialDesignDisabled[] = "disabled";
 const char kAshMaterialDesignEnabled[] = "enabled";
 const char kAshMaterialDesignExperimental[] = "experimental";
 
-// Specifies a maximum number of preview windows in overview mode that still
-// allows using mask layers to hide the original window header and use rounded
-// corners.
-const char kAshMaxWindowsToUseMaskInOverview[] = "ash-max-previews-to-use-mask";
-
-// Specifies a maximum number of preview windows in overview mode that still
-// allows using alpha shapes to hide the original window header.
-const char kAshMaxWindowsToUseShapeInOverview[] =
-    "ash-max-previews-to-use-shape";
-
 // Enables the heads-up display for tracking touch points.
 const char kAshTouchHud[] = "ash-touch-hud";