Remove extra reference from GOF.

This removes second reference for frame 3 in GOF predefined for 3
temporal layers since encoder never use that reference.

Bug: webrtc:9245
Change-Id: I6fbdbe7d3c753dda7fbcfcbd05f3530f70f80728
Reviewed-on: https://webrtc-review.googlesource.com/74705
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Reviewed-by: Marco Paniconi <marpan@google.com>
Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23193}
diff --git a/modules/video_coding/jitter_buffer_unittest.cc b/modules/video_coding/jitter_buffer_unittest.cc
index f9dffc0..06faf21 100644
--- a/modules/video_coding/jitter_buffer_unittest.cc
+++ b/modules/video_coding/jitter_buffer_unittest.cc
@@ -189,10 +189,9 @@
   packet_.video_header.codecHeader.VP9.gof_idx = 3;
   EXPECT_TRUE(map_.UpdatePacket(&packet_));
   EXPECT_EQ(2, packet_.video_header.codecHeader.VP9.temporal_idx);
-  EXPECT_FALSE(packet_.video_header.codecHeader.VP9.temporal_up_switch);
-  EXPECT_EQ(2U, packet_.video_header.codecHeader.VP9.num_ref_pics);
+  EXPECT_TRUE(packet_.video_header.codecHeader.VP9.temporal_up_switch);
+  EXPECT_EQ(1U, packet_.video_header.codecHeader.VP9.num_ref_pics);
   EXPECT_EQ(1, packet_.video_header.codecHeader.VP9.pid_diff[0]);
-  EXPECT_EQ(2, packet_.video_header.codecHeader.VP9.pid_diff[1]);
 }
 
 class TestBasicJitterBuffer : public ::testing::TestWithParam<std::string>,