TYPE_UNKNOWN       17 chrome/common/importer/importer_type.h   TYPE_UNKNOWN         = -1,
TYPE_UNKNOWN      171 components/autofill/core/browser/autofill_metrics.h     TYPE_UNKNOWN = 0,  // Offered no prediction.
TYPE_UNKNOWN       56 extensions/common/manifest.h     TYPE_UNKNOWN = 0,
TYPE_UNKNOWN       14 ppapi/shared_impl/media_stream_buffer.h   enum Type { TYPE_UNKNOWN = 0, TYPE_AUDIO = 1, TYPE_VIDEO = 2, };
TYPE_UNKNOWN       25 webkit/common/data_element.h     TYPE_UNKNOWN = -1,