Generate constants for HTTP status codes and reason phrases using macro.

net/http/http_status_code.h

Index: net/http/http_status_code.h
diff --git a/net/http/http_status_code.h b/net/http/http_status_code.h
index 8780c7107580ead4f03f3cb02de246a5749dbdb8..a4b398b5038c20c5bf131d73f99621c06c4e1737 100644
--- a/net/http/http_status_code.h
+++ b/net/http/http_status_code.h
@@ -10,58 +10,12 @@
 namespace net {
 
 // HTTP status codes.
-// Taken from RFC 2616 Section 10.
 enum HttpStatusCode {
-  // Informational 1xx
-  HTTP_CONTINUE = 100,
-  HTTP_SWITCHING_PROTOCOLS = 101,
 
-  // Successful 2xx
-  HTTP_OK = 200,
-  HTTP_CREATED = 201,
-  HTTP_ACCEPTED = 202,
-  HTTP_NON_AUTHORITATIVE_INFORMATION = 203,
-  HTTP_NO_CONTENT = 204,
-  HTTP_RESET_CONTENT = 205,
-  HTTP_PARTIAL_CONTENT = 206,
+#define HTTP_STATUS(label, code, reason) HTTP_ ## label = code,
+#include "net/http/http_status_code_list.h"
+#undef HTTP_STATUS
 
-  // Redirection 3xx
-  HTTP_MULTIPLE_CHOICES = 300,
-  HTTP_MOVED_PERMANENTLY = 301,
-  HTTP_FOUND = 302,
-  HTTP_SEE_OTHER = 303,
-  HTTP_NOT_MODIFIED = 304,
-  HTTP_USE_PROXY = 305,
-  // 306 is no longer used.
-  HTTP_TEMPORARY_REDIRECT = 307,
-
-  // Client error 4xx
-  HTTP_BAD_REQUEST = 400,
-  HTTP_UNAUTHORIZED = 401,
-  HTTP_PAYMENT_REQUIRED = 402,
-  HTTP_FORBIDDEN = 403,
-  HTTP_NOT_FOUND = 404,
-  HTTP_METHOD_NOT_ALLOWED = 405,
-  HTTP_NOT_ACCEPTABLE = 406,
-  HTTP_PROXY_AUTHENTICATION_REQUIRED = 407,
-  HTTP_REQUEST_TIMEOUT = 408,
-  HTTP_CONFLICT = 409,
-  HTTP_GONE = 410,
-  HTTP_LENGTH_REQUIRED = 411,
-  HTTP_PRECONDITION_FAILED = 412,
-  HTTP_REQUEST_ENTITY_TOO_LARGE = 413,
-  HTTP_REQUEST_URI_TOO_LONG = 414,
-  HTTP_UNSUPPORTED_MEDIA_TYPE = 415,
-  HTTP_REQUESTED_RANGE_NOT_SATISFIABLE = 416,
-  HTTP_EXPECTATION_FAILED = 417,
-
-  // Server error 5xx
-  HTTP_INTERNAL_SERVER_ERROR = 500,
-  HTTP_NOT_IMPLEMENTED = 501,
-  HTTP_BAD_GATEWAY = 502,
-  HTTP_SERVICE_UNAVAILABLE = 503,
-  HTTP_GATEWAY_TIMEOUT = 504,
-  HTTP_VERSION_NOT_SUPPORTED = 505,
 };
 
 // Returns the corresponding HTTP status description to use in the Reason-Phrase
@@ -69,9 +23,9 @@ enum HttpStatusCode {
 // Status Code Registry.
 // http://www.iana.org/assignments/http-status-codes/http-status-codes.xml
 //
-// This function doesn't cover all codes defined above. It returns an empty
-// string (or crash in debug build) for status codes which are not yet covered
-// or just invalid. Please extend it when needed.
+// This function may not cover all codes defined in the IANA registry. It
+// returns an empty string (or crash in debug build) for status codes which are
+// not yet covered or just invalid. Please extend it when needed.
 NET_EXPORT const char* GetHttpReasonPhrase(HttpStatusCode code);
 
 }  // namespace net