Replace ASSERT with DCHECK in core/

third_party/WebKit/Source/core/frame/DOMTimer.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 115 matching lines @@
   action_ = nullptr;
   SuspendableTimer::Stop();
 }
 
 void DOMTimer::ContextDestroyed(ExecutionContext*) {
   Stop();
 }
 
 void DOMTimer::Fired() {
   ExecutionContext* context = GetExecutionContext();
-  ASSERT(context);
+  DCHECK(context);
   context->Timers()->SetTimerNestingLevel(nesting_level_);
   DCHECK(!context->IsContextSuspended());
   // Only the first execution of a multi-shot timer should get an affirmative
   // user gesture indicator.
   UserGestureIndicator gesture_indicator(std::move(user_gesture_token_));
 
   TRACE_EVENT1("devtools.timeline", "TimerFire", "data",
                InspectorTimerFireEvent::Data(context, timeout_id_));
   probe::UserCallback probe(context,
                             RepeatInterval() ? "setInterval" : "setTimeout",
@@ skipping 39 matching lines @@
 RefPtr<WebTaskRunner> DOMTimer::TimerTaskRunner() const {
   return GetExecutionContext()->Timers()->TimerTaskRunner();
 }
 
 DEFINE_TRACE(DOMTimer) {
   visitor->Trace(action_);
   SuspendableTimer::Trace(visitor);
 }
 
 }  // namespace blink