Disable test while investigating.

Change-Id: Ide7fd1251e10fe93525fe3fccd9240318585f9e6
diff --git a/tools/libcore_failures.txt b/tools/libcore_failures.txt
index d11e015..4699907 100644
--- a/tools/libcore_failures.txt
+++ b/tools/libcore_failures.txt
@@ -248,5 +248,10 @@
           "org.apache.harmony.tests.java.util.prefs.AbstractPreferencesTest#testFlush",
           "org.apache.harmony.tests.java.util.prefs.AbstractPreferencesTest#testSync",
           "org.apache.harmony.tests.java.util.prefs.FilePreferencesImplTest#testPutGet"]
+},
+{
+  description: "Missing resource",
+  result: EXEC_FAILED,
+  names: ["libcore.java.util.LocaleTest#test_SerializationBug_26387905"]
 }
 ]