Removing some dead flags.

src/bootstrapper.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 58 matching lines @@
       delete_these_arrays_on_tear_down_(NULL) {
 }
 
 
 Handle<String> Bootstrapper::NativesSourceLookup(int index) {
   ASSERT(0 <= index && index < Natives::GetBuiltinsCount());
   Isolate* isolate = Isolate::Current();
   Factory* factory = isolate->factory();
   Heap* heap = isolate->heap();
   if (heap->natives_source_cache()->get(index)->IsUndefined()) {
-    if (!Snapshot::IsEnabled() || FLAG_new_snapshot) {
-      // We can use external strings for the natives.
-      Vector<const char> source = Natives::GetRawScriptSource(index);
-      NativesExternalStringResource* resource =
-          new NativesExternalStringResource(this,
-                                            source.start(),
-                                            source.length());
-      Handle<String> source_code =
-          factory->NewExternalStringFromAscii(resource);
-      heap->natives_source_cache()->set(index, *source_code);
-    } else {
-      // Old snapshot code can't cope with external strings at all.
-      Handle<String> source_code =
-        factory->NewStringFromAscii(Natives::GetRawScriptSource(index));
-      heap->natives_source_cache()->set(index, *source_code);
-    }
+    // We can use external strings for the natives.
+    Vector<const char> source = Natives::GetRawScriptSource(index);
+    NativesExternalStringResource* resource =
+        new NativesExternalStringResource(this,
+                                          source.start(),
+                                          source.length());
+    Handle<String> source_code =
+        factory->NewExternalStringFromAscii(resource);
+    heap->natives_source_cache()->set(index, *source_code);
   }
   Handle<Object> cached_source(heap->natives_source_cache()->get(index));
   return Handle<String>::cast(cached_source);
 }
 
 
 void Bootstrapper::Initialize(bool create_heap_objects) {
   extensions_cache_.Initialize(create_heap_objects);
   GCExtension::Register();
   ExternalizeStringExtension::Register();
@@ skipping 2264 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   ASSERT(!IsActive());
 }
 
 } }  // namespace v8::internal