sync: Loop committing items without downloading updates

sync/engine/build_commit_command.h

Index: sync/engine/build_commit_command.h
diff --git a/sync/engine/build_commit_command.h b/sync/engine/build_commit_command.h
index d18c94b8f1a84da8a30dabcfe2e5efa025592a8c..51d2e63c1c58b51126da53a4ba9be8565560d190 100644
--- a/sync/engine/build_commit_command.h
+++ b/sync/engine/build_commit_command.h
@@ -14,9 +14,14 @@
 
 namespace browser_sync {
 
+namespace sessions {
+class OrderedCommitSet;
+}
+
 class BuildCommitCommand : public SyncerCommand {
  public:
-  BuildCommitCommand();
+  BuildCommitCommand(const sessions::OrderedCommitSet& batch_commit_set,
+                     ClientToServerMessage* commit_message);
   virtual ~BuildCommitCommand();
 
   // SyncerCommand implementation.
@@ -44,6 +49,9 @@ class BuildCommitCommand : public SyncerCommand {
   int64 InterpolatePosition(int64 lo, int64 hi);
 
   DISALLOW_COPY_AND_ASSIGN(BuildCommitCommand);
+
+  const sessions::OrderedCommitSet& batch_commit_set_;
+  ClientToServerMessage* commit_message_;
 };
 
 }  // namespace browser_sync