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 c08d9636415447a2f40d5d5c159b35f818f35c68..2aaaf5c9947d697b897abbde3fb5cb0a6c48f944 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[];