Add H264 bitstream rewriting to limit frame reordering marker in header

webrtc/base/bitbuffer.h

Index: webrtc/base/bitbuffer.h
diff --git a/webrtc/base/bitbuffer.h b/webrtc/base/bitbuffer.h
index 8ea044e04129dd7bea287d56c81d886ccc2a42fd..b2baaa90958acb6414d356557789ffd8d0ffc022 100644
--- a/webrtc/base/bitbuffer.h
+++ b/webrtc/base/bitbuffer.h
@@ -109,6 +109,10 @@ class BitBufferWriter : public BitBuffer {
   // Writes the exponential golomb encoded version of the supplied value.
   // Returns false if there isn't enough room left for the value.
   bool WriteExponentialGolomb(uint32_t val);
+  // Writes the signed exponential golomb version of the supplied value.
+  // Signed exponential golomb values are just the unsigned values mapped to the
+  // sequence 0, 1, -1, 2, -2, etc. in order.
+  bool WriteSignedExponentialGolomb(int32_t val);
 
  private:
   // The buffer, as a writable array.