Use StrictModeFlag in preparser and preparse data.

src/preparser.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 1346 matching lines @@
     log_->ResumeRecording();
     if (!*ok) Expression::Default();
 
     Expect(i::Token::RBRACE, CHECK_OK);
 
     // Position right after terminal '}'.
     int end_pos = scanner_->location().end_pos;
     log_->LogFunction(function_block_pos, end_pos,
                       function_scope.materialized_literal_count(),
                       function_scope.expected_properties(),
-                      strict_mode() ? 1 : 0);
+                      strict_mode_flag());
   } else {
     ParseSourceElements(i::Token::RBRACE, CHECK_OK);
     Expect(i::Token::RBRACE, CHECK_OK);
   }
 
   if (strict_mode()) {
     int end_position = scanner_->location().end_pos;
     CheckOctalLiteral(start_position, end_position, CHECK_OK);
     CheckDelayedStrictModeViolation(start_position, end_position, CHECK_OK);
     return Expression::StrictFunction();
@@ skipping 336 matching lines @@
       backing_store_.Add(static_cast<byte>((ascii_length >> 14) | 0x80u));
     }
     backing_store_.Add(static_cast<byte>((ascii_length >> 7) | 0x80u));
   }
   backing_store_.Add(static_cast<byte>(ascii_length & 0x7f));
 
   backing_store_.AddBlock(bytes);
   return backing_store_.EndSequence().start();
 }
 } }  // v8::preparser