chromeos: Add delay between screen off and lock.

chrome/common/pref_names.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 "chrome/common/pref_names.h"
 
 #include "base/basictypes.h"
 #include "chrome/common/pref_font_webkit_names.h"
 
 namespace prefs {
@@ skipping 756 matching lines @@
 const char kShouldAlwaysShowAccessibilityMenu[] = "settings.a11y.enable_menu";
 
 // A boolean pref which turns on Advanced Filesystem
 // (USB support, SD card, etc).
 const char kLabsAdvancedFilesystemEnabled[] =
     "settings.labs.advanced_filesystem";
 
 // A boolean pref which turns on the mediaplayer.
 const char kLabsMediaplayerEnabled[] = "settings.labs.mediaplayer";
 
-// A boolean pref that turns on screen locker.
+// A boolean pref that controls whether the screen will be locked just
+// before the system is suspended or after the inactivity delays specified
+// by kPowerAcScreenLockDelayMs and kPowerBatteryScreenLockDelayMs have
+// elapsed.
 const char kEnableScreenLock[] = "settings.enable_screen_lock";
 
 // A boolean pref of whether to show mobile plan notifications.
 const char kShowPlanNotifications[] =
     "settings.internet.mobile.show_plan_notifications";
 
 // A boolean pref of whether to show 3G promo notification.
 const char kShow3gPromoNotification[] =
     "settings.internet.mobile.show_3g_promo_notification";
 
@@ skipping 37 matching lines @@
 // Holds the maximum session time in milliseconds. If this pref is set, the
 // user is logged out when the maximum session time is reached. The user is
 // informed about the remaining time by a countdown timer shown in the ash
 // system tray.
 const char kSessionLengthLimit[] = "session.length_limit";
 
 // Inactivity time in milliseconds while the system is on AC power before
 // the screen should be dimmed, turned off, or locked, before an
 // IdleActionImminent D-Bus signal should be sent, or before
 // kPowerIdleAction should be performed.  0 disables the delay (N/A for
-// kPowerAcIdleDelayMs).
+// kPowerAcIdleDelayMs).  kPowerAcScreenLockDelayMs is only honored when
+// kEnableScreenLock is set to true.
 const char kPowerAcScreenDimDelayMs[] = "power.ac_screen_dim_delay_ms";
 const char kPowerAcScreenOffDelayMs[] = "power.ac_screen_off_delay_ms";
 const char kPowerAcScreenLockDelayMs[] = "power.ac_screen_lock_delay_ms";
 const char kPowerAcIdleWarningDelayMs[] = "power.ac_idle_warning_delay_ms";
 const char kPowerAcIdleDelayMs[] = "power.ac_idle_delay_ms";
 
 // Similar delays while the system is on battery power.
 const char kPowerBatteryScreenDimDelayMs[] =
     "power.battery_screen_dim_delay_ms";
 const char kPowerBatteryScreenOffDelayMs[] =
@@ skipping 1610 matching lines @@
 // ping and the time of the last ping.
 extern const char kAppListAppLaunchCount[] = "app_list.app_launch_count";
 extern const char kLastAppListAppLaunchPing[] = "app_list.last_app_launch_ping";
 
 // A string pref for storing the salt used to compute the pepper device ID.
 const char kDRMSalt[] = "settings.privacy.drm_salt";
 // A boolean pref that enables the (private) pepper GetDeviceID() call.
 const char kEnableDRM[] = "settings.privacy.drm_enabled";
 
 }  // namespace prefs