Minor cleanups of numeric seeded hashing patch.

src/heap.h

Index: src/heap.h
===================================================================
--- src/heap.h	(revision 10365)
+++ src/heap.h	(working copy)
@@ -96,7 +96,7 @@
   V(FixedArray, single_character_string_cache, SingleCharacterStringCache)     \
   V(FixedArray, string_split_cache, StringSplitCache)                          \
   V(Object, termination_exception, TerminationException)                       \
-  V(Smi, string_hash_seed, StringHashSeed)                                     \
+  V(Smi, hash_seed, HashSeed)                                                  \
   V(Map, string_map, StringMap)                                                \
   V(Map, symbol_map, SymbolMap)                                                \
   V(Map, cons_string_map, ConsStringMap)                                       \
@@ -1506,9 +1506,9 @@
     return idle_notification_will_schedule_next_gc_;
   }
 
-  uint32_t StringHashSeed() {
-    uint32_t seed = static_cast<uint32_t>(string_hash_seed()->value());
-    ASSERT(FLAG_randomize_string_hashes || seed == 0);
+  uint32_t HashSeed() {
+    uint32_t seed = static_cast<uint32_t>(hash_seed()->value());
+    ASSERT(FLAG_randomize_hashes || seed == 0);
     return seed;
   }