[Sync] Removing duplicate includes, part 2.

components/sync/core_impl/protocol_event_buffer_unittest.cc

 // Copyright 2014 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 "components/sync/core_impl/protocol_event_buffer.h"
 
-#include <stddef.h>
 #include <stdint.h>
 
-#include <memory>
-
 #include "base/time/time.h"
 #include "components/sync/engine/events/poll_get_updates_request_event.h"
 #include "components/sync/engine/events/protocol_event.h"
 #include "components/sync/protocol/sync.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 
 class ProtocolEventBufferTest : public ::testing::Test {
  public:
@@ skipping 46 matching lines @@
   std::vector<std::unique_ptr<ProtocolEvent>> buffered_events(
       buffer_.GetBufferedProtocolEvents());
   ASSERT_EQ(ProtocolEventBuffer::kBufferSize, buffered_events.size());
 
   for (size_t i = 1; i < ProtocolEventBuffer::kBufferSize + 1; ++i) {
     EXPECT_TRUE(HasId(*(buffered_events[i - 1]), static_cast<int64_t>(i)));
   }
 }
 
 }  // namespace syncer