| // Copyright 2019 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package org.chromium.base.metrics; |
| |
| import org.chromium.base.Callback; |
| |
| /** An empty implementation of {@link UmaRecorder}. */ |
| /* package */ class NoopUmaRecorder implements UmaRecorder { |
| @Override |
| public void recordBooleanHistogram(String name, boolean sample) {} |
| |
| @Override |
| public void recordExponentialHistogram( |
| String name, int sample, int min, int max, int numBuckets) {} |
| |
| @Override |
| public void recordLinearHistogram(String name, int sample, int min, int max, int numBuckets) {} |
| |
| @Override |
| public void recordSparseHistogram(String name, int sample) {} |
| |
| @Override |
| public void recordUserAction(String name, long elapsedRealtimeMillis) {} |
| |
| @Override |
| public int getHistogramValueCountForTesting(String name, int sample) { |
| return 0; |
| } |
| |
| @Override |
| public int getHistogramTotalCountForTesting(String name) { |
| return 0; |
| } |
| |
| @Override |
| public void addUserActionCallbackForTesting(Callback<String> callback) {} |
| |
| @Override |
| public void removeUserActionCallbackForTesting(Callback<String> callback) {} |
| } |