[SPDY] Remove references to obsolete SPDY versions SPDY/1 and SPDY/2.1

net/spdy/spdy_stream.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_STREAM_H_
 #define NET_SPDY_SPDY_STREAM_H_
 
 #include <deque>
 #include <string>
 #include <vector>
@@ skipping 365 matching lines @@
   // Returns whether or not this stream is closed. Note that the only
   // time a stream is closed and not deleted is in its delegate's
   // OnClose() method.
   bool IsClosed() const;
 
   // Returns whether or not this stream has finished sending its
   // request headers and is ready to send/receive more data.
   bool IsIdle() const;
 
   // Returns the protocol used by this stream. Always between
-  // kProtoSPDY2 and kProtoSPDYMaximumVersion.
-  //
-  // TODO(akalin): Change the lower bound to kProtoSPDYMinimumVersion
-  // once we stop supporting SPDY/1.
+  // kProtoSPDYMinimumVersion and kProtoSPDYMaximumVersion.
   NextProto GetProtocol() const;
 
   int response_status() const { return response_status_; }
 
   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const;
 
   // Get the URL from the appropriate stream headers, or the empty
   // GURL() if it is unknown.
   //
   // TODO(akalin): Figure out if we really need this function,
@@ skipping 148 matching lines @@
   // When OnFrameWriteComplete() is called, these variables are set.
   SpdyFrameType just_completed_frame_type_;
   size_t just_completed_frame_size_;
 
   DISALLOW_COPY_AND_ASSIGN(SpdyStream);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_STREAM_H_