Delete unused support for vp8 partitions.

webrtc/modules/video_coding/session_info.h

Index: webrtc/modules/video_coding/session_info.h
diff --git a/webrtc/modules/video_coding/session_info.h b/webrtc/modules/video_coding/session_info.h
index e9ff25166d6fff12c85e6f06525b648869098f3e..c2de1acfde71e762182f98c7ae2257c375dd2950 100644
--- a/webrtc/modules/video_coding/session_info.h
+++ b/webrtc/modules/video_coding/session_info.h
@@ -53,13 +53,6 @@ class VCMSessionInfo {
   bool complete() const;
   bool decodable() const;
 
-  // Builds fragmentation headers for VP8, each fragment being a decodable
-  // VP8 partition. Returns the total number of bytes which are decodable. Is
-  // used instead of MakeDecodable for VP8.
-  size_t BuildVP8FragmentationHeader(uint8_t* frame_buffer,
-                                     size_t frame_buffer_length,
-                                     RTPFragmentationHeader* fragmentation);
-
   // Makes the frame decodable. I.e., only contain decodable NALUs. All
   // non-decodable NALUs will be deleted and packets will be moved to in
   // memory to remove any empty space.