sync: Loop committing items without downloading updates (v2)

sync/sessions/ordered_commit_set.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 "sync/sessions/ordered_commit_set.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 
@@ skipping 13 matching lines @@
   if (!HaveCommitItem(metahandle)) {
     inserted_metahandles_.insert(metahandle);
     metahandle_order_.push_back(metahandle);
     commit_ids_.push_back(commit_id);
     projections_[GetGroupForModelType(type, routes_)].push_back(
         commit_ids_.size() - 1);
     types_.push_back(type);
   }
 }
 
+const OrderedCommitSet::Projection& OrderedCommitSet::GetCommitIdProjection(
+    browser_sync::ModelSafeGroup group) const {
+  Projections::const_iterator i = projections_.find(group);
+  DCHECK(i != projections_.end());
+  return i->second;
+}
+
 void OrderedCommitSet::Append(const OrderedCommitSet& other) {
-  for (int i = 0; i < other.Size(); ++i) {
+  for (size_t i = 0; i < other.Size(); ++i) {
     CommitItem item = other.GetCommitItemAt(i);
     AddCommitItem(item.meta, item.id, item.group);
   }
 }
 
 void OrderedCommitSet::AppendReverse(const OrderedCommitSet& other) {
   for (int i = other.Size() - 1; i >= 0; i--) {
     CommitItem item = other.GetCommitItemAt(i);
     AddCommitItem(item.meta, item.id, item.group);
   }
@@ skipping 18 matching lines @@
         max_size);
       if (element != p.end())
         p.erase(element, p.end());
     }
     commit_ids_.resize(max_size);
     metahandle_order_.resize(max_size);
     types_.resize(max_size);
   }
 }
 
+void OrderedCommitSet::Clear() {
+  inserted_metahandles_.clear();
+  commit_ids_.clear();
+  metahandle_order_.clear();
+  for (Projections::iterator it = projections_.begin();
+       it != projections_.end(); ++it) {
+    it->second.clear();
+  }
+  types_.clear();
+}
+
 OrderedCommitSet::CommitItem OrderedCommitSet::GetCommitItemAt(
-    const int position) const {
+    const size_t position) const {
   DCHECK(position < Size());
   CommitItem return_item = {metahandle_order_[position],
       commit_ids_[position],
       types_[position]};
   return return_item;
 }
 
 bool OrderedCommitSet::HasBookmarkCommitId() const {
   ModelSafeRoutingInfo::const_iterator group
       = routes_.find(syncable::BOOKMARKS);
@@ skipping 15 matching lines @@
   commit_ids_ = other.commit_ids_;
   metahandle_order_ = other.metahandle_order_;
   projections_ = other.projections_;
   types_ = other.types_;
   routes_ = other.routes_;
 }
 
 }  // namespace sessions
 }  // namespace browser_sync