android: Enable -Wunused-const-variable.

net/quic/crypto/aes_128_gcm_12_decrypter_openssl.cc

 // Copyright (c) 2013 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.
 
 #include "net/quic/crypto/aes_128_gcm_12_decrypter.h"
 
 #include <openssl/evp.h>
 
 #include "base/memory/scoped_ptr.h"
 
 using base::StringPiece;
 
 namespace net {
 
-namespace {
-
-const size_t kKeySize = 16;
 const size_t kNoncePrefixSize = 4;
 const size_t kAESNonceSize = 12;
 
-}  // namespace
-
 Aes128Gcm12Decrypter::Aes128Gcm12Decrypter() {}
 
 Aes128Gcm12Decrypter::~Aes128Gcm12Decrypter() {}
 
 // static
 bool Aes128Gcm12Decrypter::IsSupported() { return true; }
 
 bool Aes128Gcm12Decrypter::SetKey(StringPiece key) {
   DCHECK_EQ(key.size(), sizeof(key_));
   if (key.size() != sizeof(key_)) {
@@ skipping 110 matching lines @@
 StringPiece Aes128Gcm12Decrypter::GetKey() const {
   return StringPiece(reinterpret_cast<const char*>(key_), sizeof(key_));
 }
 
 StringPiece Aes128Gcm12Decrypter::GetNoncePrefix() const {
   return StringPiece(reinterpret_cast<const char*>(nonce_prefix_),
                      kNoncePrefixSize);
 }
 
 }  // namespace net