1 files changed, 32 insertions, 0 deletions
diff --git a/chromium/ui/base/prediction/prediction_unittest_helpers.h b/chromium/ui/base/prediction/prediction_unittest_helpers.h
new file mode 100644
index 00000000000..3a22cdd55bc
--- /dev/null
+++ b/chromium/ui/base/prediction/prediction_unittest_helpers.h
@@ -0,0 +1,32 @@
+// Copyright 2020 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 UI_BASE_PREDICTION_PREDICTION_UNITTEST_HELPERS_H_
+#define UI_BASE_PREDICTION_PREDICTION_UNITTEST_HELPERS_H_
+
+#include "base/time/time.h"
+
+namespace ui {
+namespace test {
+
+class PredictionUnittestHelpers {
+ public:
+  // Copied from third_party\blink\public\common\input\web_input_event.h
+  static constexpr base::TimeTicks GetStaticTimeStampForTests() {
+    // Note: intentionally use a relatively large delta from base::TimeTicks ==
+    // 0. Otherwise, code that tracks the time ticks of the last event that
+    // happened and computes a delta might get confused when the testing
+    // timestamp is near 0, as the computed delta may very well be under the
+    // delta threshold.
+    //
+    // TODO(dcheng): This really shouldn't use FromInternalValue(), but
+    // constexpr support for time operations is a bit busted...
+    return base::TimeTicks::FromInternalValue(123'000'000);
+  }
+};
+
+}  // namespace test
+}  // namespace ui
+
+#endif  // UI_BASE_PREDICTION_PREDICTION_UNITTEST_HELPERS_H_