Fix flag to unblock Google 3 roll

Change-Id: I5c8f7da5a7502119a1d568cf74b5160a4b10dda2
diff --git a/src/library_desugar/jdk11/desugar_jdk_libs.json b/src/library_desugar/jdk11/desugar_jdk_libs.json
index 21535ff..41ac1e6 100644
--- a/src/library_desugar/jdk11/desugar_jdk_libs.json
+++ b/src/library_desugar/jdk11/desugar_jdk_libs.json
@@ -256,8 +256,8 @@
         "wrapper." : "j$.wrapper."
       },
       "rewrite_derived_prefix": {
-        "java.nio.file.attribute.": {
-          "j$.nio.file.attribute.": "java.nio.file.attribute."
+        "java.nio.file.attribute.FileTime": {
+          "j$.nio.file.attribute.FileTime": "java.nio.file.attribute.FileTime"
         },
         "java.io.": {
           "__wrapper__.j$.io.": "j$.io.",
diff --git a/src/library_desugar/jdk11/desugar_jdk_libs_alternative_3.json b/src/library_desugar/jdk11/desugar_jdk_libs_alternative_3.json
index 44f2b41..de5d525 100644
--- a/src/library_desugar/jdk11/desugar_jdk_libs_alternative_3.json
+++ b/src/library_desugar/jdk11/desugar_jdk_libs_alternative_3.json
@@ -260,8 +260,8 @@
         "wrapper." : "j$.wrapper."
       },
       "rewrite_derived_prefix": {
-        "java.nio.file.attribute.": {
-          "j$.nio.file.attribute.": "java.nio.file.attribute."
+        "java.nio.file.attribute.FileTime": {
+          "j$.nio.file.attribute.FileTime": "java.nio.file.attribute.FileTime"
         },
         "java.io.": {
           "__wrapper__.j$.io.": "j$.io.",