MapCache simplification. It is now a FixedArray that maps number of properties to a WeakCell with...

src/factory.h

Index: src/factory.h
diff --git a/src/factory.h b/src/factory.h
index 6a9ee5506a98fa065580a9ed65548823e50ab950..44bb1be5317aa1ddf9ca19c1e06099ae9916b21f 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -643,10 +643,11 @@ class Factory FINAL {
 
   Handle<DebugInfo> NewDebugInfo(Handle<SharedFunctionInfo> shared);
 
-  // Return a map using the map cache in the native context.
-  // The key the an ordered set of property names.
+  // Return a map for given number of properties using the map cache in the
+  // native context.
   Handle<Map> ObjectLiteralMapFromCache(Handle<Context> context,
-                                        Handle<FixedArray> keys);
+                                        int number_of_properties,
+                                        bool* is_result_from_cache);
 
   // Creates a new FixedArray that holds the data associated with the
   // atom regexp and stores it in the regexp.
@@ -689,14 +690,6 @@ class Factory FINAL {
   // Creates a code object that is not yet fully initialized yet.
   inline Handle<Code> NewCodeRaw(int object_size, bool immovable);
 
-  // Create a new map cache.
-  Handle<MapCache> NewMapCache(int at_least_space_for);
-
-  // Update the map cache in the native context with (keys, map)
-  Handle<MapCache> AddToMapCache(Handle<Context> context,
-                                 Handle<FixedArray> keys,
-                                 Handle<Map> map);
-
   // Attempt to find the number in a small cache.  If we finds it, return
   // the string representation of the number.  Otherwise return undefined.
   Handle<Object> GetNumberStringCache(Handle<Object> number);