Replace ASSERT with DCHECK in core/

third_party/WebKit/Source/core/clipboard/DataObjectItem.cpp

 /*
  * Copyright (C) 2011 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 100 matching lines @@
       type_(type),
       sequence_number_(sequence_number) {}
 
 File* DataObjectItem::GetAsFile() const {
   if (Kind() != kFileKind)
     return nullptr;
 
   if (source_ == kInternalSource) {
     if (file_)
       return file_.Get();
-    ASSERT(shared_buffer_);
+    DCHECK(shared_buffer_);
     // FIXME: This code is currently impossible--we never populate
     // m_sharedBuffer when dragging in. At some point though, we may need to
     // support correctly converting a shared buffer into a file.
     return nullptr;
   }
 
   ASSERT(source_ == kPasteboardSource);
   if (GetType() == kMimeTypeImagePng) {
     WebBlobInfo blob_info = Platform::Current()->Clipboard()->ReadImage(
         WebClipboard::kBufferStandard);
@@ skipping 51 matching lines @@
 
 String DataObjectItem::FileSystemId() const {
   return file_system_id_;
 }
 
 DEFINE_TRACE(DataObjectItem) {
   visitor->Trace(file_);
 }
 
 }  // namespace blink