Replace ASSERT with DCHECK in modules/

third_party/WebKit/Source/modules/navigatorcontentutils/NavigatorContentUtils.cpp

 /*
  * Copyright (C) 2011, Google Inc. All rights reserved.
  * Copyright (C) 2014, Samsung Electronics. 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
@@ skipping 129 matching lines @@
 void NavigatorContentUtils::registerProtocolHandler(
     Navigator& navigator,
     const String& scheme,
     const String& url,
     const String& title,
     ExceptionState& exception_state) {
   if (!navigator.GetFrame())
     return;
 
   Document* document = navigator.GetFrame()->GetDocument();
-  ASSERT(document);
+  DCHECK(document);
 
   if (!VerifyCustomHandlerURL(*document, url, exception_state))
     return;
 
   if (!VerifyCustomHandlerScheme(scheme, exception_state))
     return;
 
   // Count usage; perhaps we can lock this to secure contexts.
   UseCounter::Count(*document,
                     document->IsSecureContext()
@@ skipping 27 matching lines @@
     Navigator& navigator,
     const String& scheme,
     const String& url,
     ExceptionState& exception_state) {
   DEFINE_STATIC_LOCAL(const String, declined, ("declined"));
 
   if (!navigator.GetFrame())
     return declined;
 
   Document* document = navigator.GetFrame()->GetDocument();
-  ASSERT(document);
+  DCHECK(document);
   if (document->IsContextDestroyed())
     return declined;
 
   if (!VerifyCustomHandlerURL(*document, url, exception_state))
     return declined;
 
   if (!VerifyCustomHandlerScheme(scheme, exception_state))
     return declined;
 
   return CustomHandlersStateString(
       NavigatorContentUtils::From(navigator)
           ->Client()
           ->IsProtocolHandlerRegistered(scheme, document->CompleteURL(url)));
 }
 
 void NavigatorContentUtils::unregisterProtocolHandler(
     Navigator& navigator,
     const String& scheme,
     const String& url,
     ExceptionState& exception_state) {
   if (!navigator.GetFrame())
     return;
 
   Document* document = navigator.GetFrame()->GetDocument();
-  ASSERT(document);
+  DCHECK(document);
 
   if (!VerifyCustomHandlerURL(*document, url, exception_state))
     return;
 
   if (!VerifyCustomHandlerScheme(scheme, exception_state))
     return;
 
   NavigatorContentUtils::From(navigator)->Client()->UnregisterProtocolHandler(
       scheme, document->CompleteURL(url));
 }
 
 DEFINE_TRACE(NavigatorContentUtils) {
   visitor->Trace(client_);
   Supplement<Navigator>::Trace(visitor);
 }
 
 const char* NavigatorContentUtils::SupplementName() {
   return "NavigatorContentUtils";
 }
 
 void NavigatorContentUtils::ProvideTo(Navigator& navigator,
                                       NavigatorContentUtilsClient* client) {
   Supplement<Navigator>::ProvideTo(
       navigator, NavigatorContentUtils::SupplementName(),
       new NavigatorContentUtils(navigator, client));
 }
 
 }  // namespace blink