Assert event timestamp to be monotonic and not from future

content/shell/renderer/layout_test/blink_test_runner.cc

 // Copyright (c) 2012 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.
 
 #include "content/shell/renderer/layout_test/blink_test_runner.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <clocale>
@@ skipping 703 matching lines @@
 }
 
 float BlinkTestRunner::GetDeviceScaleFactor() const {
   return render_view()->GetDeviceScaleFactor();
 }
 
 void BlinkTestRunner::RunIdleTasks(const base::Closure& callback) {
     SchedulerRunIdleTasks(callback);
 }
 
+base::Callback<double()> BlinkTestRunner::time_function_;
+
+void BlinkTestRunner::SetMockMonotonicTimeFunction(
+    const base::Callback<double()>& time_function) const {
+  time_function_ = time_function;
+  // TODO(majidvp): Perhaps we need a generic utility to convert a
+  // base::Callback to a WTF::Function similar to WebFunction but in reverse
+  // direction.
+  WebTestingSupport::setMonotonicallyIncreasingTimeFunctionForTesting(
+    time_function_.is_null() ? nullptr : returnMockTime);
+
+}
+
 bool BlinkTestRunner::AddMediaStreamVideoSourceAndTrack(
     blink::WebMediaStream* stream) {
   DCHECK(stream);
 #if defined(ENABLE_WEBRTC)
   return AddVideoTrackToMediaStream(
       base::WrapUnique(new MockVideoCapturerSource()),
       false,  // is_remote
       false,  // is_readonly
       stream);
 #else
@@ skipping 284 matching lines @@
 void BlinkTestRunner::ReportLeakDetectionResult(
     const LeakDetectionResult& report) {
   Send(new ShellViewHostMsg_LeakDetectionDone(routing_id(), report));
 }
 
 void BlinkTestRunner::OnDestruct() {
   delete this;
 }
 
 }  // namespace content