gdata: Define the resource ID for the root directory

chrome/browser/chromeos/gdata/gdata_files.h

Index: chrome/browser/chromeos/gdata/gdata_files.h
diff --git a/chrome/browser/chromeos/gdata/gdata_files.h b/chrome/browser/chromeos/gdata/gdata_files.h
index 6b7e01db094ac64b4df1842dcb70af73f1d77fd7..d30c1df6c3a0bb8872411f32ed40196a29191c3d 100644
--- a/chrome/browser/chromeos/gdata/gdata_files.h
+++ b/chrome/browser/chromeos/gdata/gdata_files.h
@@ -56,6 +56,14 @@ enum GDataFileType {
   HOSTED_DOCUMENT,
 };
 
+// The root directory name used for the Google Drive file system tree. The
+// name is used in URLs for the file manager, hence user-visible.
+const FilePath::CharType kGDataRootDirectory[] = FILE_PATH_LITERAL("drive");
+
+// The resource ID for the root directory is defined in the spec:
+// https://developers.google.com/google-apps/documents-list/
+const char kGDataRootDirectoryResourceId[] = "folder:root";
+
 // Base class for representing files and directories in gdata virtual file
 // system.
 class GDataEntry {