Don't disable hash randomization option in predictable mode.

src/v8.cc

Index: src/v8.cc
diff --git a/src/v8.cc b/src/v8.cc
index 28454b437e5d9f75141572e37865b01e3220dfae..e0d8bb20b07ca6a4e88ed07e2eb7569c2a369bac 100644
--- a/src/v8.cc
+++ b/src/v8.cc
@@ -185,12 +185,9 @@ void V8::RunMicrotasks(Isolate* isolate) {
 void V8::InitializeOncePerProcessImpl() {
   FlagList::EnforceFlagImplications();
 
-  if (FLAG_predictable) {
-    if (FLAG_random_seed == 0) {
-      // Avoid random seeds in predictable mode.
-      FLAG_random_seed = 12347;
-    }
-    FLAG_hash_seed = 0;
+  if (FLAG_predictable && FLAG_random_seed == 0) {
+    // Avoid random seeds in predictable mode.
+    FLAG_random_seed = 12347;
   }
 
   if (FLAG_stress_compaction) {