Replace ASSERT with DCHECK in core/

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

 /*
  * Copyright (C) 2006, 2007, 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 200 matching lines @@
       Blob* blob = data_object_->Item(i)->GetAsFile();
       if (blob && blob->IsFile())
         files->Append(ToFile(blob));
     }
   }
 
   return files;
 }
 
 void DataTransfer::setDragImage(Element* image, int x, int y) {
-  ASSERT(image);
+  DCHECK(image);
 
   if (!IsForDragAndDrop())
     return;
 
   IntPoint location(x, y);
   if (isHTMLImageElement(*image) && !image->isConnected())
     SetDragImageResource(toHTMLImageElement(*image).CachedImage(), location);
   else
     SetDragImageElement(image, location);
 }
@@ skipping 26 matching lines @@
   }
   if (drag_image_) {
     loc = drag_loc_;
     return DragImage::Create(drag_image_->GetImage());
   }
   return nullptr;
 }
 
 static ImageResourceContent* GetImageResourceContent(Element* element) {
   // Attempt to pull ImageResourceContent from element
-  ASSERT(element);
+  DCHECK(element);
   LayoutObject* layout_object = element->GetLayoutObject();
   if (!layout_object || !layout_object->IsImage())
     return 0;
 
   LayoutImage* image = ToLayoutImage(layout_object);
   if (image->CachedImage() && !image->CachedImage()->ErrorOccurred())
     return image->CachedImage();
 
   return 0;
 }
@@ skipping 30 matching lines @@
   WriteImageToDataObject(data_object_.Get(), element, image_url);
 
   // Put img tag on the clipboard referencing the image
   data_object_->SetData(kMimeTypeTextHTML,
                         CreateMarkup(element, kIncludeNode, kResolveAllURLs));
 }
 
 void DataTransfer::WriteURL(Node* node, const KURL& url, const String& title) {
   if (!data_object_)
     return;
-  ASSERT(!url.IsEmpty());
+  DCHECK(!url.IsEmpty());
 
   data_object_->SetURLAndTitle(url, title);
 
   // The URL can also be used as plain text.
   data_object_->SetData(kMimeTypeTextPlain, url.GetString());
 
   // The URL can also be used as an HTML fragment.
   data_object_->SetHTMLAndBaseURL(
       CreateMarkup(node, kIncludeNode, kResolveAllURLs), url);
 }
@@ skipping 158 matching lines @@
   }
 }
 
 DEFINE_TRACE(DataTransfer) {
   visitor->Trace(data_object_);
   visitor->Trace(drag_image_);
   visitor->Trace(drag_image_element_);
 }
 
 }  // namespace blink