Clean up a few unused globals.

net/base/gzip_filter_unittest.cc

 // Copyright (c) 2011 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 <fstream>
 #include <ostream>
 
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "net/base/gzip_filter.h"
 #include "net/base/mock_filter_context.h"
 #include "net/base/io_buffer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #include "third_party/zlib/zlib.h"
 
 namespace {
 
 const int kDefaultBufferSize = 4096;
 const int kSmallBufferSize = 128;
 
-const char kApplicationOctetStream[] = "application/octet-stream";
-const char kApplicationXGzip[] = "application/x-gzip";
-const char kApplicationGzip[] = "application/gzip";
-const char kApplicationXGunzip[] = "application/x-gunzip";
-
 // The GZIP header (see RFC 1952):
 //   +---+---+---+---+---+---+---+---+---+---+
 //   |ID1|ID2|CM |FLG|     MTIME     |XFL|OS |
 //   +---+---+---+---+---+---+---+---+---+---+
 //     ID1     \037
 //     ID2     \213
 //     CM      \010 (compression method == DEFLATE)
 //     FLG     \000 (special flags that we do not support)
 //     MTIME   Unix format modification time (0 means not available)
 //     XFL     2-4? DEFLATE flags
@@ skipping 345 matching lines @@
   int corrupt_decode_size = kDefaultBufferSize;
 
   int code = DecodeAllWithFilter(filter_.get(), corrupt_data, corrupt_data_len,
                                  corrupt_decode_buffer, &corrupt_decode_size);
 
   // Expect failures
   EXPECT_TRUE(code == Filter::FILTER_ERROR);
 }
 
 }  // namespace net