Add base::HostToNetXX() & NetToHostXX(), and use them to replace htonX() & ntohX() in Chrome.

chrome/common/metrics/metrics_log_base.cc

 // 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.
 
 #include "chrome/common/metrics/metrics_log_base.h"
 
 #include "base/base64.h"
 #include "base/basictypes.h"
 #include "base/md5.h"
 #include "base/perftimer.h"
@@ skipping 25 matching lines @@
 // Any id less than 16 bytes is considered to be a testing id.
 bool IsTestingID(const std::string& id) {
   return id.size() < 16;
 }
 
 // Converts the 8-byte prefix of an MD5 hash into a uint64 value.
 inline uint64 HashToUInt64(const std::string& hash) {
   uint64 value;
   DCHECK_GE(hash.size(), sizeof(value));
   memcpy(&value, hash.data(), sizeof(value));
-  return base::htonll(value);
+  return base::HostToNet64(value);
 }
 
 // Creates an MD5 hash of the given value, and returns hash as a byte buffer
 // encoded as an std::string.
 std::string CreateHash(const std::string& value) {
   base::MD5Context context;
   base::MD5Init(&context);
   base::MD5Update(&context, value);
 
   base::MD5Digest digest;
@@ skipping 407 matching lines @@
   for (size_t i = 0; i < histogram.bucket_count(); ++i) {
     if (snapshot.counts(i)) {
       HistogramEventProto::Bucket* bucket = histogram_proto->add_bucket();
       bucket->set_min(histogram.ranges(i));
       bucket->set_max(histogram.ranges(i + 1));
       bucket->set_bucket_index(i);
       bucket->set_count(snapshot.counts(i));
     }
   }
 }