build/internal/release_defaults.gypi

{
  'msvs_settings': {
    'VCCLCompilerTool': {
      'Optimization': '2',
      'StringPooling': 'true',
      'OmitFramePointers': 'true',
    },
    'VCLinkerTool': {
      'LinkIncremental': '1',
      'OptimizeReferences': '2',
      'EnableCOMDATFolding': '2',
      'OptimizeForWindows98': '1',
    },
  },
}