| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CC_INPUT_SCROLLER_SIZE_METRICS_H_ |
| #define CC_INPUT_SCROLLER_SIZE_METRICS_H_ |
| |
| namespace cc { |
| |
| // Use the two constants to add scroller size related UMA metrics. |
| // The goal of the metrics is to find the frequency of scrollers of |
| // different sizes that get scrolled. This experiment is aiming at small |
| // scrollers therefore the big ones, e.g. larger than 400px * 500px, will get |
| // capped into one bucket. |
| static constexpr int kScrollerSizeLargestBucket = 200000; |
| static constexpr int kScrollerSizeBucketCount = 50; |
| |
| } // namespace cc |
| |
| #endif // CC_INPUT_SCROLLER_SIZE_METRICS_H_ |
