Make rtc_software_fallback_wrappers target visible.

Need to depend on them from Chromium.

Bug: webrtc:7925
Change-Id: Iea1bb3b937c602920bfd87f885c87c790ac7bc17
Reviewed-on: https://webrtc-review.googlesource.com/82061
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Anders Carlsson <andersc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23580}

api/video_codecs/video_decoder_software_fallback_wrapper.h

@@ -0,0 +1,29 @@
+/*
+ *  Copyright (c) 2016 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.
+ */
+
+#ifndef API_VIDEO_CODECS_VIDEO_DECODER_SOFTWARE_FALLBACK_WRAPPER_H_
+#define API_VIDEO_CODECS_VIDEO_DECODER_SOFTWARE_FALLBACK_WRAPPER_H_
+
+#include <memory>
+
+#include "api/video_codecs/video_decoder.h"
+
+namespace webrtc {
+
+// Used to wrap external VideoDecoders to provide a fallback option on
+// software decoding when a hardware decoder fails to decode a stream due to
+// hardware restrictions, such as max resolution.
+std::unique_ptr<VideoDecoder> CreateVideoDecoderSoftwareFallbackWrapper(
+    std::unique_ptr<VideoDecoder> sw_fallback_decoder,
+    std::unique_ptr<VideoDecoder> hw_decoder);
+
+}  // namespace webrtc
+
+#endif  // API_VIDEO_CODECS_VIDEO_DECODER_SOFTWARE_FALLBACK_WRAPPER_H_