[Sync] Move //components/sync to the syncer namespace, take 2.

components/sync/engine/commit_queue.h

Index: components/sync/engine/commit_queue.h
diff --git a/components/sync/engine/commit_queue.h b/components/sync/engine/commit_queue.h
index 58cd2f6c2d05503fb6f0a77eecd30aab22476156..860f3ee4dc58b5bf94e15cc537bd4880289ace9d 100644
--- a/components/sync/engine/commit_queue.h
+++ b/components/sync/engine/commit_queue.h
@@ -7,7 +7,7 @@
 
 #include "components/sync/core/non_blocking_sync_common.h"
 
-namespace syncer_v2 {
+namespace syncer {
 
 // Interface used by a synced data type to issue requests to the sync backend.
 class CommitQueue {
@@ -19,6 +19,6 @@ class CommitQueue {
   virtual void EnqueueForCommit(const CommitRequestDataList& list) = 0;
 };
 
-}  // namespace syncer_v2
+}  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_ENGINE_COMMIT_QUEUE_H_