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

components/sync/syncable/entry_kernel.h

Index: components/sync/syncable/entry_kernel.h
diff --git a/components/sync/syncable/entry_kernel.h b/components/sync/syncable/entry_kernel.h
index 82a58988864e4be3788ef8c9e71a3a41fd65686a..d231c30081068b11cc96ed94ede0989e5f093f41 100644
--- a/components/sync/syncable/entry_kernel.h
+++ b/components/sync/syncable/entry_kernel.h
@@ -9,6 +9,7 @@
 
 #include <algorithm>
 #include <map>
+#include <memory>
 #include <set>
 #include <string>
 
@@ -194,9 +195,8 @@ enum { BIT_TEMPS_COUNT = BIT_TEMPS_END - BIT_TEMPS_BEGIN };
 
 struct EntryKernel {
  private:
-  typedef syncer::ProtoValuePtr<sync_pb::EntitySpecifics> EntitySpecificsPtr;
-  typedef syncer::ProtoValuePtr<sync_pb::AttachmentMetadata>
-      AttachmentMetadataPtr;
+  typedef ProtoValuePtr<sync_pb::EntitySpecifics> EntitySpecificsPtr;
+  typedef ProtoValuePtr<sync_pb::AttachmentMetadata> AttachmentMetadataPtr;
 
   std::string string_fields[STRING_FIELDS_COUNT];
   EntitySpecificsPtr specifics_fields[PROTO_FIELDS_COUNT];