Revert "Reland of Remove SendPacer from ViEEncoder
Revert due to crbug/609816. Investigation is ongoing.

This reverts commit 28a44564c93b12839618dc0da2e2541ec6a0db23. (https://codereview.webrtc.org/1947873002/)

TBR=stefan@webrtc.org,  ivoc@webrtc.org,

BUG=609816, webrtc:5687

Review-Url: https://codereview.webrtc.org/1958053002
Cr-Commit-Position: refs/heads/master@{#12663}
diff --git a/webrtc/modules/bitrate_controller/include/bitrate_controller.h b/webrtc/modules/bitrate_controller/include/bitrate_controller.h
index a61cf6a..d6cbc02 100644
--- a/webrtc/modules/bitrate_controller/include/bitrate_controller.h
+++ b/webrtc/modules/bitrate_controller/include/bitrate_controller.h
@@ -18,7 +18,6 @@
 #include <map>
 
 #include "webrtc/modules/include/module.h"
-#include "webrtc/modules/pacing/paced_sender.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
 
 namespace webrtc {
@@ -27,8 +26,6 @@
 class RtcEventLog;
 struct PacketInfo;
 
-// Deprecated
-// TODO(perkj): Remove BitrateObserver when no implementations use it.
 class BitrateObserver {
   // Observer class for bitrate changes announced due to change in bandwidth
   // estimate or due to bitrate allocation changes. Fraction loss and rtt is
@@ -49,15 +46,10 @@
   // estimation and divide the available bitrate between all its registered
   // BitrateObservers.
  public:
-  static const int kDefaultStartBitratebps = 300000;
+  static const int kDefaultStartBitrateKbps = 300;
 
-  // Deprecated:
-  // TODO(perkj): BitrateObserver has been deprecated and is not used in WebRTC.
-  // Remove this method once other other projects does not use it.
   static BitrateController* CreateBitrateController(Clock* clock,
                                                     BitrateObserver* observer);
-  static BitrateController* CreateBitrateController(Clock* clock);
-
   virtual ~BitrateController() {}
 
   virtual RtcpBandwidthObserver* CreateRtcpBandwidthObserver() = 0;
@@ -79,10 +71,6 @@
   virtual bool AvailableBandwidth(uint32_t* bandwidth) const = 0;
 
   virtual void SetReservedBitrate(uint32_t reserved_bitrate_bps) = 0;
-
-  virtual bool GetNetworkParameters(uint32_t* bitrate,
-                                    uint8_t* fraction_loss,
-                                    int64_t* rtt) = 0;
 };
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_BITRATE_CONTROLLER_INCLUDE_BITRATE_CONTROLLER_H_