mediaview: Skeleton for ARC Documents Provider FS.

storage/common/fileapi/file_system_util.cc

Index: storage/common/fileapi/file_system_util.cc
diff --git a/storage/common/fileapi/file_system_util.cc b/storage/common/fileapi/file_system_util.cc
index 1116fcd563118eaf1b97315c2cd83d5bd964f8a6..fa6aaa08ce1831deb5f485a8d6b230ca50f2d21a 100644
--- a/storage/common/fileapi/file_system_util.cc
+++ b/storage/common/fileapi/file_system_util.cc
@@ -323,6 +323,8 @@ std::string GetFileSystemTypeString(FileSystemType type) {
       return "DeviceMediaStorage";
     case kFileSystemTypeArcContent:
       return "ArcContent";
+    case kFileSystemTypeArcDocumentsProvider:
+      return "ArcDocumentsProvider";
     case kFileSystemInternalTypeEnumStart:
     case kFileSystemInternalTypeEnumEnd:
       NOTREACHED();