Configure synthetic delays through TraceLog

base/debug/trace_event_synthetic_delay.cc

 // Copyright 2014 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 "base/debug/trace_event_synthetic_delay.h"
 #include "base/memory/singleton.h"
 
 namespace {
 const int kMaxSyntheticDelays = 32;
 }  // namespace
@@ skipping 172 matching lines @@
   return &delays_[delay_count];
 }
 
 base::TimeTicks TraceEventSyntheticDelayRegistry::Now() {
   return base::TimeTicks::HighResNow();
 }
 
 void TraceEventSyntheticDelayRegistry::ResetAllDelays() {
   AutoLock lock(lock_);
   int delay_count = base::subtle::Acquire_Load(&delay_count_);
-  for (int i = 0; i < delay_count; ++i)
+  for (int i = 0; i < delay_count; ++i) {
     delays_[i].SetTargetDuration(base::TimeDelta());
+    delays_[i].SetClock(this);
+  }
 }
 
 void ResetTraceEventSyntheticDelays() {
   TraceEventSyntheticDelayRegistry::GetInstance()->ResetAllDelays();
 }
 
 }  // namespace debug
 }  // namespace base
 
 namespace trace_event_internal {
@@ skipping 17 matching lines @@
   if (!delay_impl) {
     delay_impl = base::debug::TraceEventSyntheticDelayRegistry::GetInstance()
                      ->GetOrCreateDelay(name);
     base::subtle::NoBarrier_Store(
         impl_ptr, reinterpret_cast<base::subtle::AtomicWord>(delay_impl));
   }
   return delay_impl;
 }
 
 }  // namespace trace_event_internal