Fix VideoToolbox backgrounding issues

webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_nalu.h

Index: webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_nalu.h
diff --git a/webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_nalu.h b/webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_nalu.h
index 31ef525816cd012fd168db0b6de3da46cdc04930..59535ee8c63176ca752aa7854d950ff9cd6d5775 100644
--- a/webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_nalu.h
+++ b/webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_nalu.h
@@ -44,6 +44,13 @@ bool H264AnnexBBufferToCMSampleBuffer(const uint8_t* annexb_buffer,
                                       CMVideoFormatDescriptionRef video_format,
                                       CMSampleBufferRef* out_sample_buffer);
 
+bool H264AnnexBBufferHasVideoFormatDescription(const uint8_t* annexb_buffer,

[noahric, 2016/03/03 22:10:55]

Comments, since the rest of the file is nicely commented :) Same on
CreateVideoFormatDescription.

[tkchin_webrtc, 2016/03/04 19:03:07]

Done.

+                                               size_t annexb_buffer_size);
+
+CMVideoFormatDescriptionRef CreateVideoFormatDescription(
+    const uint8_t* annexb_buffer,
+    size_t annexb_buffer_size);
+
 // Helper class for reading NALUs from an RTP Annex B buffer.
 class AnnexBBufferReader final {
  public: