Revert of Make overuse estimator one dimensional.

webrtc/common_types.h

Index: webrtc/common_types.h
diff --git a/webrtc/common_types.h b/webrtc/common_types.h
index a6453c2f30dc583feee1390591fbbf0b267ed59c..048485fa2fc89f99483230cb2f0b5f479acb7ed0 100644
--- a/webrtc/common_types.h
+++ b/webrtc/common_types.h
@@ -747,6 +747,31 @@
   }
 };
 
+// Bandwidth over-use detector options.  These are used to drive
+// experimentation with bandwidth estimation parameters.
+// See modules/remote_bitrate_estimator/overuse_detector.h
+struct OverUseDetectorOptions {
+  OverUseDetectorOptions()
+      : initial_slope(8.0/512.0),
+        initial_offset(0),
+        initial_e(),
+        initial_process_noise(),
+        initial_avg_noise(0.0),
+        initial_var_noise(50) {
+    initial_e[0][0] = 100;
+    initial_e[1][1] = 1e-1;
+    initial_e[0][1] = initial_e[1][0] = 0;
+    initial_process_noise[0] = 1e-13;
+    initial_process_noise[1] = 1e-2;
+  }
+  double initial_slope;
+  double initial_offset;
+  double initial_e[2][2];
+  double initial_process_noise[2];
+  double initial_avg_noise;
+  double initial_var_noise;
+};
+
 // This structure will have the information about when packet is actually
 // received by socket.
 struct PacketTime {