Use StrictModeFlag in preparser and preparse data.

src/parser.cc

 // 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 3988 matching lines @@
         if (scope->end_position() <= function_block_pos) {
           // End position greater than end of stream is safe, and hard to check.
           ReportInvalidPreparseData(function_name, CHECK_OK);
         }
         isolate()->counters()->total_preparse_skipped()->Increment(
             scope->end_position() - function_block_pos);
         // Seek to position just before terminal '}'.
         scanner().SeekForward(scope->end_position() - 1);
         materialized_literal_count = entry.literal_count();
         expected_property_count = entry.property_count();
-        if (entry.strict_mode()) top_scope_->SetStrictModeFlag(kStrictMode);
+        top_scope_->SetStrictModeFlag(entry.strict_mode_flag());
         only_simple_this_property_assignments = false;
         this_property_assignments = isolate()->factory()->empty_fixed_array();
         Expect(Token::RBRACE, CHECK_OK);
       }
     }
 
     if (!is_lazily_compiled) {
       ParseSourceElements(body, Token::RBRACE, CHECK_OK);
 
       materialized_literal_count = lexical_scope.materialized_literal_count();
@@ skipping 1399 matching lines @@
       result = parser.ParseProgram(source,
                                    info->is_global(),
                                    info->strict_mode_flag());
     }
   }
   info->SetFunction(result);
   return (result != NULL);
 }
 
 } }  // namespace v8::internal