Add settings IDs to SpdyConstants.

net/spdy/spdy_framer.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SPDY_SPDY_FRAMER_H_
 #define NET_SPDY_SPDY_FRAMER_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 67 matching lines @@
 // SettingsMap has unique (flags, value) pair for given SpdySettingsIds ID.
 typedef std::pair<SpdySettingsFlags, uint32> SettingsFlagsAndValue;
 typedef std::map<SpdySettingsIds, SettingsFlagsAndValue> SettingsMap;
 
 // Scratch space necessary for processing SETTINGS frames.
 struct NET_EXPORT_PRIVATE SpdySettingsScratch {
   SpdySettingsScratch() { Reset(); }
 
   void Reset() {
     setting_buf_len = 0;
-    last_setting_id = 0;
+    last_setting_id = -1;
   }
 
   // Buffer contains up to one complete key/value pair.
   char setting_buf[8];
 
   // The amount of the buffer that is filled with valid data.
   size_t setting_buf_len;
 
   // The ID of the last setting that was processed in the current SETTINGS
   // frame. Used for detecting out-of-order or duplicate keys within a settings
-  // frame. Set to 0 before first key/value pair is processed.
-  uint32 last_setting_id;
+  // frame. Set to -1 before first key/value pair is processed.
+  int last_setting_id;
 };
 
 // SpdyFramerVisitorInterface is a set of callbacks for the SpdyFramer.
 // Implement this interface to receive event callbacks as frames are
 // decoded from the framer.
 //
 // Control frames that contain SPDY header blocks (SYN_STREAM, SYN_REPLY,
 // HEADER, and PUSH_PROMISE) are processed in fashion that allows the
 // decompressed header block to be delivered in chunks to the visitor.
 // The following steps are followed:
@@ skipping 602 matching lines @@
   // If a HEADERS frame is followed by a CONTINUATION frame, the FIN/END_STREAM
   // flag is still carried in the HEADERS frame. If it's set, flip this so that
   // we know to terminate the stream when the entire header block has been
   // processed.
   bool end_stream_when_done_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_FRAMER_H_