Move /webrtc/api/android files to /webrtc/sdk/android

webrtc/api/android/java/src/org/webrtc/Metrics.java

-/*
- *  Copyright 2016 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.
- */
-
-package org.webrtc;
-
-import java.util.HashMap;
-import java.util.Map;
-
-// Java-side of androidmetrics_jni.cc.
-//
-// Rtc histograms can be queried through the API, getAndReset().
-// The returned map holds the name of a histogram and its samples.
-//
-// Example of |map| with one histogram:
-// |name|: "WebRTC.Video.InputFramesPerSecond"
-//     |min|: 1
-//     |max|: 100
-//     |bucketCount|: 50
-//     |samples|: [30]:1
-//
-// Most histograms are not updated frequently (e.g. most video metrics are an
-// average over the call and recorded when a stream is removed).
-// The metrics can for example be retrieved when a peer connection is closed.
-
-public class Metrics {
-  private static final String TAG = "Metrics";
-
-  static {
-    System.loadLibrary("jingle_peerconnection_so");
-  }
-  public final Map<String, HistogramInfo> map =
-      new HashMap<String, HistogramInfo>(); // <name, HistogramInfo>
-
-  /**
-   * Class holding histogram information.
-   */
-  public static class HistogramInfo {
-    public final int min;
-    public final int max;
-    public final int bucketCount;
-    public final Map<Integer, Integer> samples =
-        new HashMap<Integer, Integer>(); // <value, # of events>
-
-    public HistogramInfo(int min, int max, int bucketCount) {
-      this.min = min;
-      this.max = max;
-      this.bucketCount = bucketCount;
-    }
-
-    public void addSample(int value, int numEvents) {
-      samples.put(value, numEvents);
-    }
-  }
-
-  private void add(String name, HistogramInfo info) {
-    map.put(name, info);
-  }
-
-  // Enables gathering of metrics (which can be fetched with getAndReset()).
-  // Must be called before PeerConnectionFactory is created.
-  public static void enable() {
-    nativeEnable();
-  }
-
-  // Gets and clears native histograms.
-  public static Metrics getAndReset() {
-    return nativeGetAndReset();
-  }
-
-  private static native void nativeEnable();
-  private static native Metrics nativeGetAndReset();
-}