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

sync/engine/download_updates_command_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sync/engine/download_updates_command.h"
 #include "sync/protocol/autofill_specifics.pb.h"
 #include "sync/protocol/bookmark_specifics.pb.h"
 #include "sync/protocol/preference_specifics.pb.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/test/engine/fake_model_worker.h"
 #include "sync/test/engine/syncer_command_test.h"
 
 using ::testing::_;
 
 namespace syncer {
 
 // A test fixture for tests exercising DownloadUpdatesCommandTest.
 class DownloadUpdatesCommandTest : public SyncerCommandTest {
  protected:
   DownloadUpdatesCommandTest()
       : command_(true /* create_mobile_bookmarks_folder */) {}
 
   virtual void SetUp() {
     workers()->clear();
     mutable_routing_info()->clear();
     workers()->push_back(
         make_scoped_refptr(new FakeModelWorker(GROUP_DB)));
     workers()->push_back(
         make_scoped_refptr(new FakeModelWorker(GROUP_UI)));
-    (*mutable_routing_info())[syncer::AUTOFILL] = GROUP_DB;
-    (*mutable_routing_info())[syncer::BOOKMARKS] = GROUP_UI;
-    (*mutable_routing_info())[syncer::PREFERENCES] = GROUP_UI;
+    (*mutable_routing_info())[AUTOFILL] = GROUP_DB;
+    (*mutable_routing_info())[BOOKMARKS] = GROUP_UI;
+    (*mutable_routing_info())[PREFERENCES] = GROUP_UI;
     SyncerCommandTest::SetUp();
   }
 
   DownloadUpdatesCommand command_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DownloadUpdatesCommandTest);
 };
 
 TEST_F(DownloadUpdatesCommandTest, ExecuteNoPayloads) {
   ConfigureMockServerConnection();
   mock_server()->ExpectGetUpdatesRequestTypes(
       GetRoutingInfoTypes(routing_info()));
   command_.ExecuteImpl(session());
 }
 
 TEST_F(DownloadUpdatesCommandTest, ExecuteWithPayloads) {
   ConfigureMockServerConnection();
   sessions::SyncSourceInfo source;
-  source.types[syncer::AUTOFILL] = "autofill_payload";
-  source.types[syncer::BOOKMARKS] = "bookmark_payload";
-  source.types[syncer::PREFERENCES] = "preferences_payload";
+  source.types[AUTOFILL] = "autofill_payload";
+  source.types[BOOKMARKS] = "bookmark_payload";
+  source.types[PREFERENCES] = "preferences_payload";
   mock_server()->ExpectGetUpdatesRequestTypes(
       GetRoutingInfoTypes(routing_info()));
   mock_server()->ExpectGetUpdatesRequestPayloads(source.types);
   command_.ExecuteImpl(session(source));
 }
 
 TEST_F(DownloadUpdatesCommandTest, VerifyAppendDebugInfo) {
   sync_pb::DebugInfo debug_info;
   EXPECT_CALL(*(mock_debug_info_getter()), GetAndClearDebugInfo(_))
       .Times(1);
   command_.AppendClientDebugInfoIfNeeded(session(), &debug_info);
 
   // Now try to add it once more and make sure |GetAndClearDebugInfo| is not
   // called.
   command_.AppendClientDebugInfoIfNeeded(session(), &debug_info);
 }
 
 }  // namespace syncer