Address some violations of chromium-style.

webrtc/modules/congestion_controller/median_slope_estimator.h

Index: webrtc/modules/congestion_controller/median_slope_estimator.h
diff --git a/webrtc/modules/congestion_controller/median_slope_estimator.h b/webrtc/modules/congestion_controller/median_slope_estimator.h
index 3a13ec71ab4bbd2fd0767c5926bbf1afebb8e785..f360aa790bb2fefbdeebc86026df0ea5e4391ec9 100644
--- a/webrtc/modules/congestion_controller/median_slope_estimator.h
+++ b/webrtc/modules/congestion_controller/median_slope_estimator.h
@@ -48,10 +48,8 @@ class MedianSlopeEstimator {
 
  private:
   struct DelayInfo {
-    DelayInfo(int64_t time, double delay, size_t slope_count)
-        : time(time), delay(delay) {
-      slopes.reserve(slope_count);
-    }
+    DelayInfo(int64_t time, double delay, size_t slope_count);
+    ~DelayInfo();
     int64_t time;
     double delay;
     std::vector<double> slopes;