Delete unneeded includes of atomic32.h.

webrtc/voice_engine/test/auto_test/standard/rtp_rtcp_test.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include <memory>
 
 #include "webrtc/rtc_base/criticalsection.h"
-#include "webrtc/system_wrappers/include/atomic32.h"
 #include "webrtc/system_wrappers/include/event_wrapper.h"
 #include "webrtc/test/testsupport/fileutils.h"
 #include "webrtc/voice_engine/test/auto_test/fixtures/after_streaming_fixture.h"
 #include "webrtc/voice_engine/test/auto_test/voe_standard_test.h"
 
 class TestRtpObserver : public webrtc::VoERTPObserver {
  public:
   TestRtpObserver() : changed_ssrc_event_(webrtc::EventWrapper::Create()) {}
   virtual ~TestRtpObserver() {}
   virtual void OnIncomingCSRCChanged(int channel,
@@ skipping 84 matching lines @@
 
   Sleep(1000);
 
   unsigned int ssrc;
   EXPECT_EQ(0, voe_rtp_rtcp_->GetLocalSSRC(channel_, ssrc));
   EXPECT_EQ(local_ssrc, ssrc);
 
   EXPECT_EQ(0, voe_rtp_rtcp_->GetRemoteSSRC(channel_, ssrc));
   EXPECT_EQ(local_ssrc, ssrc);
 }