[Sync] Remove unneeded 'using syncer::' lines and 'syncer::' scopings

sync/api/sync_error.cc

Index: sync/api/sync_error.cc
diff --git a/sync/api/sync_error.cc b/sync/api/sync_error.cc
index 307f3393974e150b931ec7b8c0d5b512cb76773c..12090404d1670f03670b89c9deca0b829c58c238 100644
--- a/sync/api/sync_error.cc
+++ b/sync/api/sync_error.cc
@@ -18,7 +18,7 @@ SyncError::SyncError() {
 
 SyncError::SyncError(const tracked_objects::Location& location,
                      const std::string& message,
-                     syncer::ModelType type) {
+                     ModelType type) {
   Init(location, message, type);
   PrintLogError();
 }
@@ -51,19 +51,19 @@ void SyncError::Copy(const SyncError& other) {
 void SyncError::Clear() {
   location_.reset();
   message_ = std::string();
-  type_ = syncer::UNSPECIFIED;
+  type_ = UNSPECIFIED;
 }
 
 void SyncError::Reset(const tracked_objects::Location& location,
                       const std::string& message,
-                      syncer::ModelType type) {
+                      ModelType type) {
   Init(location, message, type);
   PrintLogError();
 }
 
 void SyncError::Init(const tracked_objects::Location& location,
                      const std::string& message,
-                     syncer::ModelType type) {
+                     ModelType type) {
   location_.reset(new tracked_objects::Location(location));
   message_ = message;
   type_ = type;
@@ -84,7 +84,7 @@ const std::string& SyncError::message() const {
   return message_;
 }
 
-syncer::ModelType SyncError::type() const {
+ModelType SyncError::type() const {
   CHECK(IsSet());
   return type_;
 }
@@ -93,7 +93,7 @@ std::string SyncError::ToString() const {
   if (!IsSet()) {
     return std::string();
   }
-  return location_->ToString() + ", " + syncer::ModelTypeToString(type_) +
+  return location_->ToString() + ", " + ModelTypeToString(type_) +
       ", Sync Error: " + message_;
 }
 
@@ -102,7 +102,7 @@ void SyncError::PrintLogError() const {
                                   location_->line_number(),
                                   logging::LOG_ERROR).stream(),
               LOG_IS_ON(ERROR))
-      << syncer::ModelTypeToString(type_) << ", Sync Error: " << message_;
+      << ModelTypeToString(type_) << ", Sync Error: " << message_;
 }
 
 void PrintTo(const SyncError& sync_error, std::ostream* os) {