[Sync] Move //sync to //components/sync.

sync/engine/commit_processor.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 "sync/engine/commit_processor.h"
-
-#include <stddef.h>
-
-#include <utility>
-
-#include "base/metrics/histogram_macros.h"
-#include "sync/engine/commit_contribution.h"
-#include "sync/engine/commit_contributor.h"
-#include "sync/protocol/sync.pb.h"
-
-namespace syncer {
-
-typedef std::map<ModelType, size_t> TypeToIndexMap;
-
-CommitProcessor::CommitProcessor(CommitContributorMap* commit_contributor_map)
-    : commit_contributor_map_(commit_contributor_map) {}
-
-CommitProcessor::~CommitProcessor() {}
-
-void CommitProcessor::GatherCommitContributions(
-    ModelTypeSet commit_types,
-    size_t max_entries,
-    bool cookie_jar_mismatch,
-    bool cookie_jar_empty,
-    Commit::ContributionMap* contributions) {
-  size_t num_entries = 0;
-  for (ModelTypeSet::Iterator it = commit_types.First();
-       it.Good(); it.Inc()) {
-    CommitContributorMap::iterator cm_it =
-        commit_contributor_map_->find(it.Get());
-    if (cm_it == commit_contributor_map_->end()) {
-      NOTREACHED()
-          << "Could not find requested type " << ModelTypeToString(it.Get())
-          << " in contributor map.";
-      continue;
-    }
-    size_t spaces_remaining = max_entries - num_entries;
-    std::unique_ptr<CommitContribution> contribution =
-        cm_it->second->GetContribution(spaces_remaining);
-    if (contribution) {
-      num_entries += contribution->GetNumEntries();
-      contributions->insert(std::make_pair(it.Get(), std::move(contribution)));
-
-      if (it.Get() == SESSIONS) {
-        UMA_HISTOGRAM_BOOLEAN("Sync.CookieJarMatchOnNavigation",
-                              !cookie_jar_mismatch);
-        if (cookie_jar_mismatch) {
-          UMA_HISTOGRAM_BOOLEAN("Sync.CookieJarEmptyOnMismatch",
-                                cookie_jar_empty);
-        }
-      }
-    }
-    if (num_entries >= max_entries) {
-      DCHECK_EQ(num_entries, max_entries)
-          << "Number of commit entries exceeeds maximum";
-      break;
-    }
-  }
-}
-
-}  // namespace syncer