Remove unused method SpdyFramer::IsCompressible().

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 448 matching lines @@
   // On success, returns a new SpdyFrame with the payload compressed.
   // Compression state is maintained as part of the SpdyFramer.
   // Returned frame must be freed with "delete".
   // On failure, returns NULL.
   SpdyFrame* CompressFrame(const SpdyFrame& frame);
 
   // Create a copy of a frame.
   // Returned frame must be freed with "delete".
   SpdyFrame* DuplicateFrame(const SpdyFrame& frame);
 
-  // Returns true if a frame could be compressed.
-  bool IsCompressible(const SpdyFrame& frame) const;
-
   // For ease of testing and experimentation we can tweak compression on/off.
   void set_enable_compression(bool value) {
     enable_compression_ = value;
   }
 
   // Used only in log messages.
   void set_display_protocol(const std::string& protocol) {
     display_protocol_ = protocol;
   }
 
@@ skipping 176 matching lines @@
   // starts with HTTP.  If it does, we likely have an HTTP response.   This
   // isn't guaranteed though: we could have gotten a settings frame and then
   // corrupt data that just looks like HTTP, but deterministic checking requires
   // a lot more state.
   bool probable_http_response_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_FRAMER_H_