Remove VideoCodingModule::VCMPacketizationCallback

And move encoder name cb to VCMSendStatisticsCallback.

BUG=webrtc:5687

Review-Url: https://codereview.webrtc.org/1900193004
Cr-Commit-Position: refs/heads/master@{#12596}

webrtc/modules/video_coding/video_sender_unittest.cc

@@ -180,8 +180,8 @@ class TestVideoSender : public ::testing::Test {
   TestVideoSender() : clock_(1000), encoded_frame_callback_(&clock_) {}
 
   void SetUp() override {
-    sender_.reset(
-        new VideoSender(&clock_, &encoded_frame_callback_, nullptr, nullptr));
+    sender_.reset(new VideoSender(&clock_, &encoded_frame_callback_, nullptr,
+                                  nullptr, nullptr));
   }
 
   void AddFrame() {