Removes SpdyHeaderBlock::GetHeader(). No functional change. Not protected.

net/spdy/spdy_header_block.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_HEADER_BLOCK_H_
 #define NET_SPDY_SPDY_HEADER_BLOCK_H_
 
 #include <stddef.h>
 
 #include <list>
@@ skipping 88 matching lines @@
   // If a header with the key is already present, then append the value to the
   // existing header value, NUL ("\0") separated unless the key is cookie, in
   // which case the separator is "; ".
   // If there is no such key, a new header with the key and value is added.
   void AppendValueOrAddHeader(const base::StringPiece key,
                               const base::StringPiece value);
 
   // Allows either lookup or mutation of the value associated with a key.
   ValueProxy operator[](const base::StringPiece key);
 
-  // Non-mutating lookup of header value. Returns empty StringPiece if key not
-  // present. To distinguish between absence of header and empty header value,
-  // use find().
-  base::StringPiece GetHeader(const base::StringPiece key) const;
-
   // This object provides automatic conversions that allow SpdyHeaderBlock to be
   // nearly a drop-in replacement for linked_hash_map<string, string>. It reads
   // data from or writes data to a SpdyHeaderBlock::Storage.
   class NET_EXPORT ValueProxy {
    public:
     ~ValueProxy();
 
     // Moves are allowed.
     ValueProxy(ValueProxy&& other);
     ValueProxy& operator=(ValueProxy&& other);
@@ skipping 43 matching lines @@
 // to |headers|.  |event_param| must have been created by
 // SpdyHeaderBlockNetLogCallback.  On failure, returns false and clears
 // |headers|.
 NET_EXPORT bool SpdyHeaderBlockFromNetLogParam(
     const base::Value* event_param,
     SpdyHeaderBlock* headers);
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_HEADER_BLOCK_H_