[Chrome OS]Implement MediaStorageUtil::GetDeviceInfoForPath function to support media gallery permi…

chrome/browser/system_monitor/removable_device_constants.h

Index: chrome/browser/system_monitor/removable_device_constants.h
diff --git a/chrome/browser/system_monitor/removable_device_constants.h b/chrome/browser/system_monitor/removable_device_constants.h
index 5d055bf1f3aa874c675c5611ce13a597a132785d..a34b5e93b23a66161776eeb74698a8dc7df5f1b3 100644
--- a/chrome/browser/system_monitor/removable_device_constants.h
+++ b/chrome/browser/system_monitor/removable_device_constants.h
@@ -14,6 +14,10 @@ extern const char kFSUniqueIdPrefix[];
 extern const char kVendorModelSerialPrefix[];
 
 #if defined(OS_CHROMEOS)
+// Delimiter constants used in device label to specify data storage id.
+extern const char kLeftParen[];
+extern const char kRightParen[];
+
 extern const char kVendorModelVolumeStoragePrefix[];
 #endif