Create a test that serializes and deserializes a context. Fix...

src/serialize.h

 // Copyright 2006-2009 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 213 matching lines @@
 
   // A bitmask for getting the space out of an instruction.
   static const int kSpaceMask = 15;
 
   static inline bool SpaceIsLarge(int space) { return space >= kLargeData; }
   static inline bool SpaceIsPaged(int space) {
     return space >= FIRST_PAGED_SPACE && space <= LAST_PAGED_SPACE;
   }
 
   static int partial_snapshot_cache_length_;
-  static const int kPartialSnapshotCacheCapacity = 1024;
+  static const int kPartialSnapshotCacheCapacity = 1300;
   static Object* partial_snapshot_cache_[];
   static bool tracing_;
 };
 
 
 int SnapshotByteSource::GetInt() {
   // A little unwind to catch the really small ints.
   int snapshot_byte = Get();
   if ((snapshot_byte & 0x80) == 0) {
     SerializerDeserializer::Trace("Tag IntLastPart", snapshot_byte);
@@ skipping 270 matching lines @@
 
   // Serialize the objects reachable from a single object pointer.
   virtual void Serialize(Object** o);
   virtual void SerializeObject(Object* o,
                                ReferenceRepresentation representation);
 
  protected:
   virtual int RootIndex(HeapObject* o);
   virtual int PartialSnapshotCacheIndex(HeapObject* o);
   virtual bool ShouldBeInThePartialSnapshotCache(HeapObject* o) {
-    return o->IsString() || o->IsSharedFunctionInfo();
+    return o->IsString() || o->IsSharedFunctionInfo() || o->IsHeapNumber();
   }
 
  private:
   Serializer* startup_serializer_;
   DISALLOW_COPY_AND_ASSIGN(PartialSerializer);
 };
 
 
 class StartupSerializer : public Serializer {
  public:
@@ skipping 21 matching lines @@
   virtual int RootIndex(HeapObject* o) { return kInvalidRootIndex; }
   virtual bool ShouldBeInThePartialSnapshotCache(HeapObject* o) {
     return false;
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_SERIALIZE_H_