Remove webkitdropzone.

third_party/WebKit/Source/core/input/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 988 matching lines @@
 
   // Cross-process drag and drop is not yet supported.
   if (toHTMLFrameElementBase(target)->contentFrame() &&
       !toHTMLFrameElementBase(target)->contentFrame()->isLocalFrame())
     return false;
 
   frame = toLocalFrame(toHTMLFrameElementBase(target)->contentFrame());
   return true;
 }
 
-static bool findDropZone(Node* target, DataTransfer* dataTransfer) {
-  Element* element =
-      target->isElementNode() ? toElement(target) : target->parentElement();
-  for (; element; element = element->parentElement()) {
-    bool matched = false;
-    AtomicString dropZoneStr = element->fastGetAttribute(webkitdropzoneAttr);
-
-    if (dropZoneStr.isEmpty())
-      continue;
-
-    UseCounter::count(element->document(),
-                      UseCounter::PrefixedHTMLElementDropzone);
-
-    dropZoneStr = dropZoneStr.lower();
-
-    SpaceSplitString keywords(dropZoneStr, SpaceSplitString::ShouldNotFoldCase);
-    if (keywords.isNull())
-      continue;
-
-    DragOperation dragOperation = DragOperationNone;
-    for (unsigned i = 0; i < keywords.size(); i++) {
-      DragOperation op = convertDropZoneOperationToDragOperation(keywords[i]);
-      if (op != DragOperationNone) {
-        if (dragOperation == DragOperationNone)
-          dragOperation = op;
-      } else {
-        matched =
-            matched || dataTransfer->hasDropZoneType(keywords[i].getString());
-      }
-
-      if (matched && dragOperation != DragOperationNone)
-        break;
-    }
-    if (matched) {
-      dataTransfer->setDropEffect(
-          convertDragOperationToDropZoneOperation(dragOperation));
-      return true;
-    }
-  }
-  return false;
-}
-
 WebInputEventResult EventHandler::updateDragAndDrop(
     const WebMouseEvent& event,
     DataTransfer* dataTransfer) {
   WebInputEventResult eventResult = WebInputEventResult::NotHandled;
 
   if (!m_frame->view())
     return eventResult;
 
   HitTestRequest request(HitTestRequest::ReadOnly);
   MouseEventWithHitTestResults mev =
@@ skipping 27 matching lines @@
     } else if (newTarget) {
       // As per section 7.9.4 of the HTML 5 spec., we must always fire a drag
       // event before firing a dragenter, dragleave, or dragover event.
       if (m_mouseEventManager->dragState().m_dragSrc) {
         // For now we don't care if event handler cancels default behavior,
         // since there is none.
         m_mouseEventManager->dispatchDragSrcEvent(EventTypeNames::drag, event);
       }
       eventResult = m_mouseEventManager->dispatchDragEvent(
           EventTypeNames::dragenter, newTarget, event, dataTransfer);
-      if (eventResult == WebInputEventResult::NotHandled &&
-          findDropZone(newTarget, dataTransfer))
-        eventResult = WebInputEventResult::HandledSystem;
     }
 
     if (targetIsFrame(m_dragTarget.get(), targetFrame)) {
       if (targetFrame)
         eventResult =
             targetFrame->eventHandler().updateDragAndDrop(event, dataTransfer);
     } else if (m_dragTarget) {
       m_mouseEventManager->dispatchDragEvent(
           EventTypeNames::dragleave, m_dragTarget.get(), event, dataTransfer);
     }
@@ skipping 15 matching lines @@
       // Note, when dealing with sub-frames, we may need to fire only a dragover
       // event as a drag event may have been fired earlier.
       if (!m_shouldOnlyFireDragOverEvent &&
           m_mouseEventManager->dragState().m_dragSrc) {
         // For now we don't care if event handler cancels default behavior,
         // since there is none.
         m_mouseEventManager->dispatchDragSrcEvent(EventTypeNames::drag, event);
       }
       eventResult = m_mouseEventManager->dispatchDragEvent(
           EventTypeNames::dragover, newTarget, event, dataTransfer);
-      if (eventResult == WebInputEventResult::NotHandled &&
-          findDropZone(newTarget, dataTransfer))
-        eventResult = WebInputEventResult::HandledSystem;
       m_shouldOnlyFireDragOverEvent = false;
     }
   }
   m_dragTarget = newTarget;
 
   return eventResult;
 }
 
 void EventHandler::cancelDragAndDrop(const WebMouseEvent& event,
                                      DataTransfer* dataTransfer) {
@@ skipping 993 matching lines @@
 }
 
 FrameHost* EventHandler::frameHost() const {
   if (!m_frame->page())
     return nullptr;
 
   return &m_frame->page()->frameHost();
 }
 
 }  // namespace blink