Increase HTTP/2 response header buffer limit to 256 kB.

net/spdy/buffered_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_BUFFERED_SPDY_FRAMER_H_
 #define NET_SPDY_BUFFERED_SPDY_FRAMER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 258 matching lines @@
     return spdy_framer_.GetFrameMaximumSize();
   }
 
   size_t GetDataFrameMaximumPayload() const {
     return spdy_framer_.GetDataFrameMaximumPayload();
   }
 
   int frames_received() const { return frames_received_; }
 
  private:
-  // The size of the header_buffer_.
-  enum { kHeaderBufferSize = 32 * 1024 };
-
   void InitHeaderStreaming(SpdyStreamId stream_id);
 
   SpdyFramer spdy_framer_;
   BufferedSpdyFramerVisitorInterface* visitor_;
 
   // Header block streaming state:
-  char header_buffer_[kHeaderBufferSize];
-  size_t header_buffer_used_;
+  std::string header_buffer_;
   bool header_buffer_valid_;
   SpdyStreamId header_stream_id_;
   int frames_received_;
 
   // Collection of fields from control frames that we need to
   // buffer up from the spdy framer.
   struct ControlFrameFields {
     SpdyFrameType type;
     SpdyStreamId stream_id;
     SpdyStreamId associated_stream_id;
@@ skipping 14 matching lines @@
     std::string debug_data;
   };
   scoped_ptr<GoAwayFields> goaway_fields_;
 
   DISALLOW_COPY_AND_ASSIGN(BufferedSpdyFramer);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_BUFFERED_SPDY_FRAMER_H_