Replace ASSERT with DCHECK in modules/

third_party/WebKit/Source/modules/netinfo/NavigatorNetworkInformation.cpp

 // 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 "modules/netinfo/NavigatorNetworkInformation.h"
 
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Navigator.h"
 #include "modules/netinfo/NetworkInformation.h"
@@ skipping 25 matching lines @@
   return "NavigatorNetworkInformation";
 }
 
 NetworkInformation* NavigatorNetworkInformation::connection(
     Navigator& navigator) {
   return NavigatorNetworkInformation::From(navigator).connection();
 }
 
 NetworkInformation* NavigatorNetworkInformation::connection() {
   if (!connection_ && GetFrame()) {
-    ASSERT(GetFrame()->DomWindow());
+    DCHECK(GetFrame()->DomWindow());
     connection_ = NetworkInformation::Create(
         GetFrame()->DomWindow()->GetExecutionContext());
   }
   return connection_.Get();
 }
 
 DEFINE_TRACE(NavigatorNetworkInformation) {
   visitor->Trace(connection_);
   Supplement<Navigator>::Trace(visitor);
   ContextClient::Trace(visitor);
 }
 
 }  // namespace blink