Filter out maps from different global context when collecting type feedback.

src/type-info.h

 // Copyright 2011 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 238 matching lines @@
   void StoreReceiverTypes(Assignment* expr,
                           Handle<String> name,
                           SmallMapList* types);
   void CallReceiverTypes(Call* expr,
                          Handle<String> name,
                          CallKind call_kind,
                          SmallMapList* types);
   void CollectKeyedReceiverTypes(unsigned ast_id,
                                  SmallMapList* types);
 
+  static bool CanRetainOtherContext(Map* map, Context* global_context);
+  static bool CanRetainOtherContext(JSFunction* function,
+                                    Context* global_context);
+
   CheckType GetCallCheckType(Call* expr);
   Handle<JSObject> GetPrototypeForPrimitiveCheck(CheckType check);
 
   Handle<JSFunction> GetCallTarget(Call* expr);
 
   bool LoadIsBuiltin(Property* expr, Builtins::Name id);
 
   // TODO(1571) We can't use ToBooleanStub::Types as the return value because
   // of various cylces in our headers. Death to tons of implementations in
   // headers!! :-P
@@ skipping 31 matching lines @@
   Handle<Context> global_context_;
   Isolate* isolate_;
   Handle<NumberDictionary> dictionary_;
 
   DISALLOW_COPY_AND_ASSIGN(TypeFeedbackOracle);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TYPE_INFO_H_