libvpx: Pull from upstream

source/libvpx/test/decode_test_driver.h

Index: source/libvpx/test/decode_test_driver.h
===================================================================
--- source/libvpx/test/decode_test_driver.h	(revision 281795)
+++ source/libvpx/test/decode_test_driver.h	(working copy)
@@ -49,8 +49,14 @@
     vpx_codec_destroy(&decoder_);
   }
 
+  vpx_codec_err_t PeekStream(const uint8_t *cxdata, size_t size,
+                             vpx_codec_stream_info_t *stream_info);
+
   vpx_codec_err_t DecodeFrame(const uint8_t *cxdata, size_t size);
 
+  vpx_codec_err_t DecodeFrame(const uint8_t *cxdata, size_t size,
+                              void *user_priv);
+
   DxDataIterator GetDxData() {
     return DxDataIterator(&decoder_);
   }
@@ -85,6 +91,10 @@
         &decoder_, cb_get, cb_release, user_priv);
   }
 
+  const char* GetDecoderName() {
+    return vpx_codec_iface_name(CodecInterface());
+  }
+
  protected:
   virtual vpx_codec_iface_t* CodecInterface() const = 0;