chromeos: Add power management policy prefs.

chrome/common/pref_names.h

Index: chrome/common/pref_names.h
diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h
index 4199e231856285ca1e7bf341483a494e0955c7c5..11b6fe05beba6895a407059ac4355e1c7569841d 100644
--- a/chrome/common/pref_names.h
+++ b/chrome/common/pref_names.h
@@ -292,6 +292,19 @@ extern const char kSecondaryDisplayOffset[];
 extern const char kSecondaryDisplays[];
 extern const char kSessionStartTime[];
 extern const char kSessionLengthLimit[];
+extern const char kPowerAcScreenDimDelayMs[];
+extern const char kPowerAcScreenOffDelayMs[];
+extern const char kPowerAcScreenLockDelayMs[];
+extern const char kPowerAcIdleDelayMs[];
+extern const char kPowerBatteryScreenDimDelayMs[];
+extern const char kPowerBatteryScreenOffDelayMs[];
+extern const char kPowerBatteryScreenLockDelayMs[];
+extern const char kPowerBatteryIdleDelayMs[];
+extern const char kPowerIdleAction[];
+extern const char kPowerLidClosedAction[];
+extern const char kPowerUseAudioActivity[];
+extern const char kPowerUseVideoActivity[];
+extern const char kPowerPresentationIdleDelayFactor[];
 #endif  // defined(OS_CHROMEOS)
 extern const char kIpcDisabledMessages[];
 extern const char kShowHomeButton[];