Move bit_cast from base/macros.h to its own header

components/compression/compression_utils.cc

 // Copyright 2014 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 "components/compression/compression_utils.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
 
 #include <vector>
 
+#include "base/bit_cast.h"
 #include "base/logging.h"
 #include "base/sys_byteorder.h"
 #include "third_party/zlib/zlib.h"
 
 namespace {
 
 // The difference in bytes between a zlib header and a gzip header.
 const size_t kGzipZlibHeaderDifferenceBytes = 16;
 
 // Pass an integer greater than the following get a gzip header instead of a
@@ skipping 132 matching lines @@
                            &uncompressed_size,
                            bit_cast<const Bytef*>(input.data()),
                            static_cast<uLongf>(input.length())) == Z_OK) {
     output->swap(uncompressed_output);
     return true;
   }
   return false;
 }
 
 }  // namespace compression