| // Copyright 2018 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 COMPONENTS_PREVIEWS_CORE_PREVIEWS_CONSTANTS_H_ |
| #define COMPONENTS_PREVIEWS_CORE_PREVIEWS_CONSTANTS_H_ |
| |
| namespace previews { |
| |
| // The local histogram used by PreviewsOptimizationGuide to record the result of |
| // UpdateHints(). |
| extern const char kPreviewsOptimizationGuideUpdateHintsResultHistogramString[]; |
| |
| // The local histogram used by PreviewsOptimizationGuide to record that a hint |
| // finished loading. |
| extern const char kPreviewsOptimizationGuideOnLoadedHintResultHistogramString[]; |
| |
| } // namespace previews |
| |
| #endif // COMPONENTS_PREVIEWS_CORE_PREVIEWS_CONSTANTS_H_ |
