Don't re-randomize picture_id/tl0_pic_idx when re-initializing internal encoders.

webrtc/modules/video_coding/codecs/vp8/vp8_impl.h

Index: webrtc/modules/video_coding/codecs/vp8/vp8_impl.h
diff --git a/webrtc/modules/video_coding/codecs/vp8/vp8_impl.h b/webrtc/modules/video_coding/codecs/vp8/vp8_impl.h
index 858cf57b159b36f254a9a04126b286022fd99ed7..df3f0051a9d2d6fa071e89b0f8de2890787f1ad7 100644
--- a/webrtc/modules/video_coding/codecs/vp8/vp8_impl.h
+++ b/webrtc/modules/video_coding/codecs/vp8/vp8_impl.h
@@ -25,8 +25,8 @@
 
 #include "webrtc/api/video/video_frame.h"
 #include "webrtc/common_video/include/i420_buffer_pool.h"
-#include "webrtc/modules/video_coding/include/video_codec_interface.h"
 #include "webrtc/modules/video_coding/codecs/vp8/include/vp8.h"
+#include "webrtc/modules/video_coding/include/video_codec_interface.h"
 #include "webrtc/modules/video_coding/utility/quality_scaler.h"
 #include "webrtc/video_frame.h"
 
@@ -100,8 +100,9 @@ class VP8EncoderImpl : public VP8Encoder {
   int cpu_speed_default_;
   int number_of_cores_;
   uint32_t rc_max_intra_target_;
-  std::vector<TemporalLayers*> temporal_layers_;
+  std::vector<std::unique_ptr<TemporalLayers>> temporal_layers_;
   std::vector<uint16_t> picture_id_;
+  std::vector<uint8_t> tl0_pic_idx_;
   std::vector<int> last_key_frame_picture_id_;
   std::vector<bool> key_frame_request_;
   std::vector<bool> send_stream_;