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

components/sync/core/base_node.cc

Index: components/sync/core/base_node.cc
diff --git a/components/sync/core/base_node.cc b/components/sync/core/base_node.cc
index bddbeef922b903d6ef8756698f0bde93d78fcd5a..16f8a15c02aa680ff722145d16a8709799da75df 100644
--- a/components/sync/core/base_node.cc
+++ b/components/sync/core/base_node.cc
@@ -31,7 +31,7 @@ using sync_pb::AutofillProfileSpecifics;
 
 namespace syncer {
 
-using syncable::SPECIFICS;
+using syncer::syncable::SPECIFICS;
 
 // Helper function to look up the int64_t metahandle of an object given the ID
 // string.
@@ -264,7 +264,7 @@ ModelType BaseNode::GetModelType() const {
   return GetEntry()->GetModelType();
 }
 
-const syncer::AttachmentIdList BaseNode::GetAttachmentIds() const {
+const AttachmentIdList BaseNode::GetAttachmentIds() const {
   AttachmentIdList result;
   const sync_pb::AttachmentMetadata& metadata =
       GetEntry()->GetAttachmentMetadata();