Revert of Extract bitrate allocation of spatial/temporal layers out of codec impl.

webrtc/modules/video_coding/utility/default_video_bitrate_allocator.cc

-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "webrtc/modules/video_coding/utility/default_video_bitrate_allocator.h"
-#include "webrtc/base/basictypes.h"
-#include "webrtc/base/constructormagic.h"
-
-namespace webrtc {
-
-DefaultVideoBitrateAllocator::DefaultVideoBitrateAllocator(
-    const VideoCodec& codec)
-    : codec_(codec) {}
-
-DefaultVideoBitrateAllocator::~DefaultVideoBitrateAllocator() {}
-
-BitrateAllocation DefaultVideoBitrateAllocator::GetAllocation(
-    uint32_t total_bitrate_bps,
-    uint32_t framerate) {
-  BitrateAllocation allocation;
-  if (total_bitrate_bps == 0)
-    return allocation;
-
-  if (total_bitrate_bps < codec_.minBitrate * 1000) {
-    allocation.SetBitrate(0, 0, codec_.minBitrate * 1000);
-  } else if (codec_.maxBitrate > 0 &&
-             total_bitrate_bps > codec_.maxBitrate * 1000) {
-    allocation.SetBitrate(0, 0, codec_.maxBitrate * 1000);
-  } else {
-    allocation.SetBitrate(0, 0, total_bitrate_bps);
-  }
-
-  return allocation;
-}
-
-uint32_t DefaultVideoBitrateAllocator::GetPreferredBitrateBps(
-    uint32_t framerate) {
-  return GetAllocation(codec_.maxBitrate * 1000, framerate).get_sum_bps();
-}
-
-}  // namespace webrtc