Provide metadata to validator to allow faster caching.

src/trusted/validator/x86/64/ncvalidate.c

Index: src/trusted/validator/x86/64/ncvalidate.c
diff --git a/src/trusted/validator/x86/64/ncvalidate.c b/src/trusted/validator/x86/64/ncvalidate.c
index 9a41e4c2b73f4ee3b4f0f60ac64f662fadfee9dd..5d8f3d6d0f29fe81f842c01ef43762d42e55ca8f 100644
--- a/src/trusted/validator/x86/64/ncvalidate.c
+++ b/src/trusted/validator/x86/64/ncvalidate.c
@@ -45,6 +45,7 @@ static NaClValidationStatus ApplyValidator_x86_64(
     int stubout_mode,
     int readonly_text,
     const NaClCPUFeatures *f,
+    const struct NaClValidationMetadata *metadata,
     struct NaClValidationCache *cache) {
   /* TODO(jfb) Use a safe cast here. */
   const NaClCPUFeaturesX86 *cpu_features = (NaClCPUFeaturesX86 *) f;
@@ -70,7 +71,7 @@ static NaClValidationStatus ApplyValidator_x86_64(
     const char validator_id[] = "x86-64";
     cache->AddData(query, (uint8_t *) validator_id, sizeof(validator_id));
     cache->AddData(query, (uint8_t *) cpu_features, sizeof(*cpu_features));
-    cache->AddData(query, data, size);
+    AddCodeIdentity(data, size, metadata, cache, query);
     if (cache->QueryKnownToValidate(query)) {
       cache->DestroyQuery(query);
       return NaClValidationSucceeded;