sync: Implement per-type GetCommitIds

sync/engine/syncer_unittest.cc

Index: sync/engine/syncer_unittest.cc
diff --git a/sync/engine/syncer_unittest.cc b/sync/engine/syncer_unittest.cc
index 068d86304fb5cb09525a01219eb414784d84e087..4858e043576b80e69547cef9b6c98bf50e9f56d0 100644
--- a/sync/engine/syncer_unittest.cc
+++ b/sync/engine/syncer_unittest.cc
@@ -23,7 +23,7 @@
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
-#include "sync/engine/get_commit_ids_command.h"
+#include "sync/engine/get_commit_ids.h"
 #include "sync/engine/net/server_connection_manager.h"
 #include "sync/engine/process_updates_command.h"
 #include "sync/engine/sync_scheduler_impl.h"
@@ -401,12 +401,7 @@ class SyncerTest : public testing::Test,
       GetModelSafeRoutingInfo(&routes);
       ModelTypeSet types = GetRoutingInfoTypes(routes);
       sessions::OrderedCommitSet output_set(routes);
-      GetCommitIdsCommand command(&wtrans, types, limit, &output_set);
-      std::set<int64> ready_unsynced_set;
-      command.FilterUnreadyEntries(&wtrans, types,
-                                   ModelTypeSet(), false,
-                                   unsynced_handle_view, &ready_unsynced_set);
-      command.BuildCommitIds(&wtrans, routes, ready_unsynced_set);
+      GetCommitIds(&wtrans, types, limit, &output_set);
       size_t truncated_size = std::min(limit, expected_handle_order.size());
       ASSERT_EQ(truncated_size, output_set.Size());
       for (size_t i = 0; i < truncated_size; ++i) {