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

webrtc/video/video_encoder.cc

 /*
  *  Copyright (c) 2015 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.
  */
 
@@ skipping 49 matching lines @@
     case kVideoCodecVP9:
       return VideoEncoder::kVp9;
     default:
       return VideoEncoder::kUnsupportedCodec;
   }
 }
 
 VideoEncoderSoftwareFallbackWrapper::VideoEncoderSoftwareFallbackWrapper(
     VideoCodecType codec_type,
     webrtc::VideoEncoder* encoder)
-    : rates_set_(false),
+    : number_of_cores_(0),
+      max_payload_size_(0),
+      rates_set_(false),
+      bitrate_(0),
+      framerate_(0),
       channel_parameters_set_(false),
+      packet_loss_(0),
+      rtt_(0),
       encoder_type_(CodecToEncoderType(codec_type)),
       encoder_(encoder),
       callback_(nullptr) {}
 
 bool VideoEncoderSoftwareFallbackWrapper::InitFallbackEncoder() {
   if (!VideoEncoder::IsSupportedSoftware(encoder_type_)) {
     LOG(LS_WARNING)
         << "Encoder requesting fallback to codec not supported in software.";
     return false;
   }
@@ skipping 124 matching lines @@
   return encoder_->OnDroppedFrame();
 }
 
 bool VideoEncoderSoftwareFallbackWrapper::SupportsNativeHandle() const {
   if (fallback_encoder_)
     return fallback_encoder_->SupportsNativeHandle();
   return encoder_->SupportsNativeHandle();
 }
 
 }  // namespace webrtc