[Sync] Move ModelType and related classes to 'syncer' namespace

chrome/browser/sync/glue/frontend_data_type_controller.cc

Index: chrome/browser/sync/glue/frontend_data_type_controller.cc
diff --git a/chrome/browser/sync/glue/frontend_data_type_controller.cc b/chrome/browser/sync/glue/frontend_data_type_controller.cc
index 7c53fc8f8dee8361f346bc5cd4fac05e706c6ead..234dd1755208547808da3ec47e2822322c71bc5c 100644
--- a/chrome/browser/sync/glue/frontend_data_type_controller.cc
+++ b/chrome/browser/sync/glue/frontend_data_type_controller.cc
@@ -127,7 +127,7 @@ syncer::ModelSafeGroup FrontendDataTypeController::model_safe_group()
 
 std::string FrontendDataTypeController::name() const {
   // For logging only.
-  return syncable::ModelTypeToString(type());
+  return syncer::ModelTypeToString(type());
 }
 
 DataTypeController::State FrontendDataTypeController::state() const {
@@ -264,7 +264,7 @@ void FrontendDataTypeController::RecordAssociationTime(base::TimeDelta time) {
 void FrontendDataTypeController::RecordStartFailure(StartResult result) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   UMA_HISTOGRAM_ENUMERATION("Sync.DataTypeStartFailures", type(),
-                            syncable::MODEL_TYPE_COUNT);
+                            syncer::MODEL_TYPE_COUNT);
 #define PER_DATA_TYPE_MACRO(type_str) \
     UMA_HISTOGRAM_ENUMERATION("Sync." type_str "StartFailure", result, \
                               MAX_START_RESULT);