Move VideoEncoderSoftwareFallbackWrapper from webrtc/video_encoder.h to webrtc/media/engine/

webrtc/media/engine/videoencodersoftwarefallbackwrapper_unittest.cc

 /*
  *  Copyright (c) 2015 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 "webrtc/video_encoder.h"
+#include "webrtc/media/engine/videoencodersoftwarefallbackwrapper.h"
+
+#include <utility>
 
 #include "webrtc/modules/video_coding/include/video_codec_interface.h"
 #include "webrtc/modules/video_coding/include/video_error_codes.h"
 #include "webrtc/test/gtest.h"
 
 namespace webrtc {
 
 const int kWidth = 320;
 const int kHeight = 240;
 const size_t kMaxPayloadSize = 800;
@@ skipping 262 matching lines @@
 
 TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
        ReportsFallbackImplementationName) {
   UtilizeFallbackEncoder();
   // Hard coded expected value since libvpx is the software implementation name
   // for VP8. Change accordingly if the underlying implementation does.
   CheckLastEncoderName("libvpx");
 }
 
 }  // namespace webrtc