Ash: Use translucent frames by default

ash/ash_switches.cc

 // 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.
 
 #include "ash/ash_switches.h"
 
 #include <string>
 
 #include "base/command_line.h"
 
 namespace ash {
 namespace switches {
 
 // Use the in-progress uber system tray.
 const char kAshUberTray[] = "ash-uber-tray";
 
 // Force the "compact" window mode regardless of the value of kAuraWindowMode.
 // This can be used to override a value set in chrome://flags.
+// Also implies fully-opaque windows for performance.
 // TODO(derat): Remove this once the normal mode is usable on all platforms.
 const char kAuraForceCompactWindowMode[] = "aura-force-compact-window-mode";
 
 // Use Google-style dialog box frames.
 const char kAuraGoogleDialogFrames[] = "aura-google-dialog-frames";
 
 // (Most) Chrome OS hardware reports ACPI power button releases correctly.
 // Standard hardware reports releases immediately after presses.  If set, we
 // lock the screen or shutdown the system immediately in response to a press
 // instead of displaying an interactive animation.
 const char kAuraLegacyPowerButton[] = "aura-legacy-power-button";
 
 // Avoid drawing drop shadows under windows.
 const char kAuraNoShadows[] = "aura-no-shadows";
 
-// Use Aura-style translucent window frame.
-const char kAuraTranslucentFrames[] = "aura-translucent-frames";
-
 // If present animations are disabled.
 const char kAuraWindowAnimationsDisabled[] = "aura-window-animations-disabled";
 
 // Use a custom window style, e.g. --aura-window-mode=compact.
 // When this flag is not passed we default to "overlapping" mode.
 const char kAuraWindowMode[] = "aura-window-mode";
 
 // Show only a single maximized window, like traditional non-Aura builds.
 // Useful for low-resolution screens, such as on laptops.
 const char kAuraWindowModeCompact[] = "compact";
 
 // Smart window management with workspace manager that automatically lays out
 // windows.
 const char kAuraWindowModeManaged[] = "managed";
 
 // Use Aura to manage windows of type WINDOW_TYPE_PANEL.
 const char kAuraPanelManager[] = "aura-panels";
 
 }  // namespace switches
 }  // namespace ash