Move runtime helper for JSWeakCollection onto objects.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 9427 matching lines @@
 
 // Base class for both JSWeakMap and JSWeakSet
 class JSWeakCollection: public JSObject {
  public:
   // [table]: the backing hash table mapping keys to values.
   DECL_ACCESSORS(table, Object)
 
   // [next]: linked list of encountered weak maps during GC.
   DECL_ACCESSORS(next, Object)
 
+  static void Initialize(Handle<JSWeakCollection> collection, Isolate* isolate);
+  static void Set(Handle<JSWeakCollection> collection, Handle<Object> key,
+                  Handle<Object> value, int32_t hash);
+  static bool Delete(Handle<JSWeakCollection> collection, Handle<Object> key,
+                     int32_t hash);
+
   static const int kTableOffset = JSObject::kHeaderSize;
   static const int kNextOffset = kTableOffset + kPointerSize;
   static const int kSize = kNextOffset + kPointerSize;
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSWeakCollection);
 };
 
 
 // The JSWeakMap describes EcmaScript Harmony weak maps
@@ skipping 862 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_