[Cast] Clean-up: Move max_unacked_frames into CongestionControl.

media/cast/sender/vp8_encoder.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/cast/sender/vp8_encoder.h"
 
 #include "base/logging.h"
 #include "media/base/video_frame.h"
 #include "media/cast/cast_defines.h"
 #include "media/cast/net/cast_transport_config.h"
 #include "third_party/libvpx/source/libvpx/vpx/vp8cx.h"
 
 namespace media {
 namespace cast {
 
 static const uint32 kMinIntra = 300;
 
-Vp8Encoder::Vp8Encoder(const VideoSenderConfig& video_config,
-                       int max_unacked_frames)
+Vp8Encoder::Vp8Encoder(const VideoSenderConfig& video_config)
     : cast_config_(video_config),
       use_multiple_video_buffers_(
           cast_config_.max_number_of_video_buffers_used ==
           kNumberOfVp8VideoBuffers),
       raw_image_(nullptr),
       key_frame_requested_(true),
       first_frame_received_(false),
       last_encoded_frame_id_(kStartFrameId),
       last_acked_frame_id_(kStartFrameId),
       frame_id_to_reference_(kStartFrameId - 1),
@@ skipping 391 matching lines @@
   float scale_parameter = 0.5;
   uint32 target_pct = optimal_buffer_size_ms * scale_parameter *
                       cast_config_.max_frame_rate / 10;
 
   // Don't go below 3 times the per frame bandwidth.
   return std::max(target_pct, kMinIntra);
 }
 
 }  // namespace cast
 }  // namespace media