diff -up chromium-51.0.2687.0/third_party/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc.system-ffmpeg-3 chromium-51.0.2687.0/third_party/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
--- chromium-51.0.2687.0/third_party/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc.system-ffmpeg-3	2016-03-22 23:02:39.000000000 +0100
+++ chromium-51.0.2687.0/third_party/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc	2016-03-23 18:51:16.810699343 +0100
@@ -15,9 +15,9 @@
 #include <limits>
 
 extern "C" {
-#include "third_party/ffmpeg/libavcodec/avcodec.h"
-#include "third_party/ffmpeg/libavformat/avformat.h"
-#include "third_party/ffmpeg/libavutil/imgutils.h"
+#include <libavcodec/avcodec.h>
+#include <libavformat/avformat.h>
+#include <libavutil/imgutils.h>
 }  // extern "C"
 
 #include "webrtc/base/checks.h"
diff -up chromium-51.0.2687.0/third_party/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.h.system-ffmpeg-3 chromium-51.0.2687.0/third_party/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.h
--- chromium-51.0.2687.0/third_party/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.h.system-ffmpeg-3	2016-03-23 18:55:39.080894319 +0100
+++ chromium-51.0.2687.0/third_party/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.h	2016-03-23 18:54:32.178123691 +0100
@@ -17,7 +17,7 @@
 #include "webrtc/modules/video_coding/codecs/h264/include/h264.h"
 
 extern "C" {
-#include "third_party/ffmpeg/libavcodec/avcodec.h"
+#include <libavcodec/avcodec.h>
 }  // extern "C"
 
 #include "webrtc/common_video/include/i420_buffer_pool.h"