Fixig issues in bwe plot dynamics.

webrtc/modules/remote_bitrate_estimator/overuse_estimator.cc

Index: webrtc/modules/remote_bitrate_estimator/overuse_estimator.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/overuse_estimator.cc b/webrtc/modules/remote_bitrate_estimator/overuse_estimator.cc
index 5535fe3be3677df71455f70e31e0a3d9b2b695a0..54e73d972b10b92b17c726b1cf840b37e52db370 100644
--- a/webrtc/modules/remote_bitrate_estimator/overuse_estimator.cc
+++ b/webrtc/modules/remote_bitrate_estimator/overuse_estimator.cc
@@ -53,7 +53,7 @@ void OveruseEstimator::Update(int64_t t_delta,
                               int64_t now_ms) {
   const double min_frame_period = UpdateMinFramePeriod(ts_delta);
   const double t_ts_delta = t_delta - ts_delta;
-  BWE_TEST_LOGGING_PLOT(1, "dm[ms]", now_ms, t_ts_delta);
+  BWE_TEST_LOGGING_PLOT(1, "dm_ms", now_ms, t_ts_delta);
   double fs_delta = size_delta;
 
   ++num_of_deltas_;
@@ -74,7 +74,7 @@ void OveruseEstimator::Update(int64_t t_delta,
   const double Eh[2] = {E_[0][0]*h[0] + E_[0][1]*h[1],
                         E_[1][0]*h[0] + E_[1][1]*h[1]};
 
-  BWE_TEST_LOGGING_PLOT(1, "d[ms]", now_ms, slope_ * h[0] - offset_);
+  BWE_TEST_LOGGING_PLOT(1, "d_ms", now_ms, slope_ * h[0] - offset_);
 
   const double residual = t_ts_delta - slope_*h[0] - offset_;
 
@@ -120,7 +120,7 @@ void OveruseEstimator::Update(int64_t t_delta,
 
   BWE_TEST_LOGGING_PLOT(1, "kc", now_ms, K[0]);
   BWE_TEST_LOGGING_PLOT(1, "km", now_ms, K[1]);
-  BWE_TEST_LOGGING_PLOT(1, "slope[1/bps]", now_ms, slope_);
+  BWE_TEST_LOGGING_PLOT(1, "slope_1/bps", now_ms, slope_);
   BWE_TEST_LOGGING_PLOT(1, "var_noise", now_ms, var_noise_);
 }