Files.app: Use quotaBytesUsedAggregate to know the actual available space.

chrome/browser/chromeos/drive/file_system.cc

Index: chrome/browser/chromeos/drive/file_system.cc
diff --git a/chrome/browser/chromeos/drive/file_system.cc b/chrome/browser/chromeos/drive/file_system.cc
index a09eac46e9f69535b80110d025195303660a420f..664908e449a2bbaca932804cc67a89798707abda 100644
--- a/chrome/browser/chromeos/drive/file_system.cc
+++ b/chrome/browser/chromeos/drive/file_system.cc
@@ -712,9 +712,8 @@ void FileSystem::OnGetAboutResource(
   }
   DCHECK(about_resource);
 
-  callback.Run(FILE_ERROR_OK,
-               about_resource->quota_bytes_total(),
-               about_resource->quota_bytes_used());
+  callback.Run(FILE_ERROR_OK, about_resource->quota_bytes_total(),
+               about_resource->quota_bytes_used_aggregate());
 }
 
 void FileSystem::GetShareUrl(const base::FilePath& file_path,