Rename 'harddisk' to 'fixed' for storage unit type

chrome/browser/extensions/api/system_info_storage/storage_info_provider.h

Index: chrome/browser/extensions/api/system_info_storage/storage_info_provider.h
diff --git a/chrome/browser/extensions/api/system_info_storage/storage_info_provider.h b/chrome/browser/extensions/api/system_info_storage/storage_info_provider.h
index d135d45b222e59fd143c1e52884080cfffe856f7..5ed7b5a65ae242af641b25278e6550f7c2f2f76b 100644
--- a/chrome/browser/extensions/api/system_info_storage/storage_info_provider.h
+++ b/chrome/browser/extensions/api/system_info_storage/storage_info_provider.h
@@ -18,17 +18,11 @@
 #include "content/public/browser/notification_registrar.h"
 
 namespace extensions {
-namespace systeminfo {
 
-// TODO(hongbo): Here the storage type is declared as string type due to the
-// IDL doesn't support enum type yet. Once http://crbug.com/141940 is fixed,
-// we could reuse enum values generated by IDL compiler.
+namespace systeminfo {
 
-// Unknown storage type.
 extern const char kStorageTypeUnknown[];
-// Hard disk.
-extern const char kStorageTypeHardDisk[];
-// Removable storage, e.g. USB device, flash card reader.
+extern const char kStorageTypeFixed[];
 extern const char kStorageTypeRemovable[];
 
 }  // namespace systeminfo