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

sync/internal_api/syncapi_server_connection_manager_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/internal_api/syncapi_server_connection_manager.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/test_timeouts.h"
 #include "base/threading/thread.h"
 #include "base/time.h"
 #include "net/base/net_errors.h"
 #include "sync/internal_api/public/http_post_provider_factory.h"
 #include "sync/internal_api/public/http_post_provider_interface.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using base::TimeDelta;
-using syncer::HttpResponse;
-using syncer::ServerConnectionManager;
-using syncer::ScopedServerStatusWatcher;
-
 namespace syncer {
 namespace {
 
+using base::TimeDelta;
+
 class BlockingHttpPost : public HttpPostProviderInterface {
  public:
   BlockingHttpPost() : wait_for_abort_(false, false) {}
   virtual ~BlockingHttpPost() {}
 
   virtual void SetExtraRequestHeaders(const char* headers) OVERRIDE {}
   virtual void SetURL(const char* url, int port) OVERRIDE {}
   virtual void SetPostPayload(const char* content_type,
                               int content_length,
                               const char* content) OVERRIDE {}
@@ skipping 67 matching lines @@
   bool result = server.PostBufferToPath(
       &params, "/testpath", "testauth", &watcher);
 
   EXPECT_FALSE(result);
   EXPECT_EQ(HttpResponse::CONNECTION_UNAVAILABLE,
             params.response.server_status);
   abort_thread.Stop();
 }
 
 }  // namespace syncer