Handle JS-created files in <input type="file">.

Source/web/WebDragData.cpp

 /*
  * Copyright (C) 2009 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 83 matching lines @@
             item.stringType = originalItem->type();
             item.stringData = originalItem->getAsString();
         } else if (originalItem->kind() == DataObjectItem::FileKind) {
             if (originalItem->sharedBuffer()) {
                 item.storageType = Item::StorageTypeBinaryData;
                 item.binaryData = originalItem->sharedBuffer();
             } else if (originalItem->isFilename()) {
                 RefPtrWillBeRawPtr<blink::Blob> blob = originalItem->getAsFile();
                 if (blob->isFile()) {
                     File* file = toFile(blob.get());
-                    if (!file->path().isEmpty()) {
-                        item.storageType = Item::StorageTypeFilename;
-                        item.filenameData = file->path();
-                        item.displayNameData = file->name();
-                    } else if (!file->fileSystemURL().isEmpty()) {
-                        item.storageType = Item::StorageTypeFileSystemFile;
-                        item.fileSystemURL = file->fileSystemURL();
-                        item.fileSystemFileSize = file->size();
+                    if (file->hasBackingFile()) {
+                        if (file->userVisibility() == File::IsUserVisible) {
+                            item.storageType = Item::StorageTypeFilename;
+                            item.filenameData = file->path();
+                            item.displayNameData = file->name();
+                        } else {
+                            item.storageType = Item::StorageTypeFileSystemFile;
+                            item.fileSystemURL = file->fileSystemURL();
+                            item.fileSystemFileSize = file->size();
+                        }
                     } else {
-                        ASSERT_NOT_REACHED();
+                        // FIXME: support dragging constructed Files across renderers, see http://crbug.com/394955
+                        item.storageType = Item::StorageTypeString;
+                        item.stringType = "text/plain";
+                        item.stringData = file->name();
                     }
-                } else
+                } else {
                     ASSERT_NOT_REACHED();
-            } else
+                }
+            } else {
                 ASSERT_NOT_REACHED();
-        } else
+            }
+        } else {
             ASSERT_NOT_REACHED();
+        }
         item.title = originalItem->title();
         item.baseURL = originalItem->baseURL();
         itemList.append(item);
     }
     return itemList;
 }
 
 void WebDragData::setItems(const WebVector<Item>& itemList)
 {
     m_private->clearAll();
@@ skipping 37 matching lines @@
 }
 
 void WebDragData::setFilesystemId(const WebString& filesystemId)
 {
     // The ID is an opaque string, given by and validated by chromium port.
     ensureMutable();
     DraggedIsolatedFileSystem::provideTo(*m_private.get(), DraggedIsolatedFileSystem::supplementName(), DraggedIsolatedFileSystem::create(*m_private.get(), filesystemId));
 }
 
 } // namespace blink