Update CPU monitor to use moving averages.

webrtc/examples/androidapp/src/org/appspot/apprtc/HudFragment.java

 /*
  *  Copyright 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 176 matching lines @@
       }
       if (targetBitrate != null) {
         encoderStat.append("Target BR: ").append(targetBitrate).append("\n");
       }
       if (actualBitrate != null) {
         encoderStat.append("Actual BR: ").append(actualBitrate).append("\n");
       }
     }
 
     if (cpuMonitor != null) {
-      encoderStat.append("CPU%: ").append(cpuMonitor.getCpuUsageCurrent())
-        .append(". Freq: ").append(cpuMonitor.getCpuFrequencyScaleCurrent());
+      encoderStat.append("CPU%: ")
+        .append(cpuMonitor.getCpuUsageCurrent()).append("/")
+        .append(cpuMonitor.getCpuUsageAverage())
+        .append(". Freq: ").append(cpuMonitor.getFrequencyScaleAverage());
     }
     encoderStatView.setText(encoderStat.toString());
   }
 }