extern const char kPrinterRemoveTagValue[];
extern const char kPrinterLocalSettingsValue[];
extern const char kMessageTextValue[];
+extern const char kUseCDD[];
+
+extern const char kContentTypeJSON[];
+extern const char kContentTypePDF[];
+extern const char kContentTypeXML[];
+extern const char kContentTypeXPS[];
// Value of "code" parameter in cloud print "/message" requests.
extern const char kPrintSystemFailedMessageId[];