Eliminate all code related to the AutomaticProfileResetter.

chrome/browser/profile_resetter/jtl_foundation.cc

-// Copyright 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 "chrome/browser/profile_resetter/jtl_foundation.h"
-
-#include "base/logging.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_util.h"
-
-namespace jtl_foundation {
-
-Hasher::Hasher(const std::string& seed) : hmac_(crypto::HMAC::SHA256) {
-  if (!hmac_.Init(seed))
-    NOTREACHED();
-}
-
-Hasher::~Hasher() {}
-
-std::string Hasher::GetHash(const std::string& input) const {
-  if (cached_hashes_.find(input) == cached_hashes_.end()) {
-    // Calculate value.
-    unsigned char digest[kHashSizeInBytes];
-    if (!hmac_.Sign(input, digest, arraysize(digest))) {
-      NOTREACHED();
-      return std::string();
-    }
-    // Instead of using the full SHA256, we only use the hex encoding of the
-    // first 16 bytes.
-    cached_hashes_[input] = base::HexEncode(digest, kHashSizeInBytes / 2);
-    DCHECK_EQ(kHashSizeInBytes, cached_hashes_[input].size());
-  }
-  return cached_hashes_[input];
-}
-
-// static
-bool Hasher::IsHash(const std::string& maybe_hash) {
-  if (maybe_hash.size() != kHashSizeInBytes)
-    return false;
-  for (std::string::const_iterator it = maybe_hash.begin();
-       it != maybe_hash.end(); ++it) {
-    if (!IsHexDigit(*it))
-      return false;
-  }
-  return true;
-}
-
-}  // namespace jtl_foundation