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

media/cast/sender/video_encoder_impl.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/video_encoder_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/logging.h"
@@ skipping 36 matching lines @@
   encoder->Encode(video_frame, reference_time, encoded_frame.get());
   environment->PostTask(
       CastEnvironment::MAIN,
       FROM_HERE,
       base::Bind(frame_encoded_callback, base::Passed(&encoded_frame)));
 }
 }  // namespace
 
 VideoEncoderImpl::VideoEncoderImpl(
     scoped_refptr<CastEnvironment> cast_environment,
-    const VideoSenderConfig& video_config,
-    int max_unacked_frames)
+    const VideoSenderConfig& video_config)
     : cast_environment_(cast_environment) {
   if (video_config.codec == CODEC_VIDEO_VP8) {
-    encoder_.reset(new Vp8Encoder(video_config, max_unacked_frames));
+    encoder_.reset(new Vp8Encoder(video_config));
     cast_environment_->PostTask(CastEnvironment::VIDEO,
                                 FROM_HERE,
                                 base::Bind(&InitializeEncoderOnEncoderThread,
                                            cast_environment,
                                            encoder_.get()));
 #ifndef OFFICIAL_BUILD
   } else if (video_config.codec == CODEC_VIDEO_FAKE) {
     encoder_.reset(new FakeSoftwareVideoEncoder(video_config));
 #endif
   } else {
@@ skipping 45 matching lines @@
   dynamic_config_.key_frame_requested = true;
 }
 
 // Inform the encoder to only reference frames older or equal to frame_id;
 void VideoEncoderImpl::LatestFrameIdToReference(uint32 frame_id) {
   dynamic_config_.latest_frame_id_to_reference = frame_id;
 }
 
 }  //  namespace cast
 }  //  namespace media