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

sync/internal_api/public/engine/model_safe_worker_unittest.cc

Index: sync/internal_api/public/engine/model_safe_worker_unittest.cc
diff --git a/sync/internal_api/public/engine/model_safe_worker_unittest.cc b/sync/internal_api/public/engine/model_safe_worker_unittest.cc
index b1036b506175f72cf1d830e82c8e14ae0f431b70..5acf46017064525d3c55692f34a5f86c808ef2f4 100644
--- a/sync/internal_api/public/engine/model_safe_worker_unittest.cc
+++ b/sync/internal_api/public/engine/model_safe_worker_unittest.cc
@@ -16,9 +16,9 @@ class ModelSafeWorkerTest : public ::testing::Test {
 
 TEST_F(ModelSafeWorkerTest, ModelSafeRoutingInfoToValue) {
   ModelSafeRoutingInfo routing_info;
-  routing_info[syncer::BOOKMARKS] = GROUP_PASSIVE;
-  routing_info[syncer::NIGORI] = GROUP_UI;
-  routing_info[syncer::PREFERENCES] = GROUP_DB;
+  routing_info[BOOKMARKS] = GROUP_PASSIVE;
+  routing_info[NIGORI] = GROUP_UI;
+  routing_info[PREFERENCES] = GROUP_DB;
   DictionaryValue expected_value;
   expected_value.SetString("Bookmarks", "GROUP_PASSIVE");
   expected_value.SetString("Encryption keys", "GROUP_UI");
@@ -30,9 +30,9 @@ TEST_F(ModelSafeWorkerTest, ModelSafeRoutingInfoToValue) {
 
 TEST_F(ModelSafeWorkerTest, ModelSafeRoutingInfoToString) {
   ModelSafeRoutingInfo routing_info;
-  routing_info[syncer::BOOKMARKS] = GROUP_PASSIVE;
-  routing_info[syncer::NIGORI] = GROUP_UI;
-  routing_info[syncer::PREFERENCES] = GROUP_DB;
+  routing_info[BOOKMARKS] = GROUP_PASSIVE;
+  routing_info[NIGORI] = GROUP_UI;
+  routing_info[PREFERENCES] = GROUP_DB;
   EXPECT_EQ(
       "{\"Bookmarks\":\"GROUP_PASSIVE\",\"Encryption keys\":\"GROUP_UI\","
       "\"Preferences\":\"GROUP_DB\"}",
@@ -41,23 +41,20 @@ TEST_F(ModelSafeWorkerTest, ModelSafeRoutingInfoToString) {
 
 TEST_F(ModelSafeWorkerTest, GetRoutingInfoTypes) {
   ModelSafeRoutingInfo routing_info;
-  routing_info[syncer::BOOKMARKS] = GROUP_PASSIVE;
-  routing_info[syncer::NIGORI] = GROUP_UI;
-  routing_info[syncer::PREFERENCES] = GROUP_DB;
-  const syncer::ModelTypeSet expected_types(
-      syncer::BOOKMARKS,
-      syncer::NIGORI,
-      syncer::PREFERENCES);
+  routing_info[BOOKMARKS] = GROUP_PASSIVE;
+  routing_info[NIGORI] = GROUP_UI;
+  routing_info[PREFERENCES] = GROUP_DB;
+  const ModelTypeSet expected_types(BOOKMARKS, NIGORI, PREFERENCES);
   EXPECT_TRUE(GetRoutingInfoTypes(routing_info).Equals(expected_types));
 }
 
 TEST_F(ModelSafeWorkerTest, ModelSafeRoutingInfoToPayloadMap) {
   std::string payload = "test";
   ModelSafeRoutingInfo routing_info;
-  routing_info[syncer::BOOKMARKS] = GROUP_PASSIVE;
-  routing_info[syncer::NIGORI] = GROUP_UI;
-  routing_info[syncer::PREFERENCES] = GROUP_DB;
-  syncer::ModelTypePayloadMap types_with_payloads =
+  routing_info[BOOKMARKS] = GROUP_PASSIVE;
+  routing_info[NIGORI] = GROUP_UI;
+  routing_info[PREFERENCES] = GROUP_DB;
+  ModelTypePayloadMap types_with_payloads =
       ModelSafeRoutingInfoToPayloadMap(routing_info, payload);
   ASSERT_EQ(routing_info.size(), types_with_payloads.size());
   for (ModelSafeRoutingInfo::iterator iter = routing_info.begin();