Propagate receiver from initial call site to code generator.

src/fast-codegen.h

 // Copyright 2010 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 19 matching lines @@
 
 #include "v8.h"
 
 #include "ast.h"
 
 namespace v8 {
 namespace internal {
 
 class FastCodeGenSyntaxChecker: public AstVisitor {
  public:
-  FastCodeGenSyntaxChecker() : has_supported_syntax_(true) {}
+  explicit FastCodeGenSyntaxChecker(Handle<Object> receiver)
+      : receiver_(receiver), has_supported_syntax_(true) {
+  }
 
   void Check(FunctionLiteral* fun);
 
+  Handle<Object> receiver() { return receiver_; }
   bool has_supported_syntax() { return has_supported_syntax_; }
 
  private:
   void VisitDeclarations(ZoneList<Declaration*>* decls);
   void VisitStatements(ZoneList<Statement*>* stmts);
 
   // AST node visit functions.
 #define DECLARE_VISIT(type) virtual void Visit##type(type* node);
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
 
+  Handle<Object> receiver_;
   bool has_supported_syntax_;
 
   DISALLOW_COPY_AND_ASSIGN(FastCodeGenSyntaxChecker);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FAST_CODEGEN_H_