Move the QP scaling thresholds to the relevant encoders

webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc

Index: webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc
diff --git a/webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc b/webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc
index bba30a3ca81acc368b9a13365f54ed06b1c94cd1..a3274c19197355e017084cd589c57949a9d81abb 100644
--- a/webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc
+++ b/webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc
@@ -26,6 +26,8 @@ namespace webrtc {
 
 namespace {
 
+const int kLowH264QpThreshold = 24;

[pbos-webrtc, 2016/09/12 19:51:49]

I want these to be declared in one place for this and
androidmediaencoder_jni.cc, since they are believed to work well as defaults

+const int kHighH264QpThreshold = 37;
 const bool kOpenH264EncoderDetailedLogging = false;
 
 // Used by histograms. Values of entries should not be changed.
@@ -213,8 +215,8 @@ int32_t H264EncoderImpl::InitEncode(const VideoCodec* codec_settings,
     return WEBRTC_VIDEO_CODEC_ERROR;
   }
   // TODO(pbos): Base init params on these values before submitting.
-  quality_scaler_.Init(QualityScaler::kLowH264QpThreshold,
-                       QualityScaler::kBadH264QpThreshold,
+  quality_scaler_.Init(kLowH264QpThreshold,
+                       kHighH264QpThreshold,
                        codec_settings_.startBitrate, codec_settings_.width,
                        codec_settings_.height, codec_settings_.maxFramerate);
   int video_format = EVideoFormatType::videoFormatI420;