Replace ASSERT, RELEASE_ASSERT, and ASSERT_NOT_REACHED in bindings

third_party/WebKit/Source/bindings/core/v8/custom/V8IntersectionObserverCustom.cpp

 // Copyright 2016 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 "bindings/core/v8/V8IntersectionObserver.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8DOMWrapper.h"
@@ skipping 36 matching lines @@
   if (exception_state.HadException())
     return;
 
   IntersectionObserverCallback* callback = new V8IntersectionObserverCallback(
       v8::Local<v8::Function>::Cast(info[0]), wrapper,
       ScriptState::Current(info.GetIsolate()));
   IntersectionObserver* observer = IntersectionObserver::Create(
       intersection_observer_init, *callback, exception_state);
   if (exception_state.HadException())
     return;
-  ASSERT(observer);
+  DCHECK(observer);
   V8SetReturnValue(info,
                    V8DOMWrapper::AssociateObjectWithWrapper(
                        info.GetIsolate(), observer, &wrapperTypeInfo, wrapper));
 }
 
 }  // namespace blink