Compute ResourceResponse::suggestedFileName on the fly.

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 25 matching lines @@
 #include "core/fileapi/FileList.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/html/HTMLTextFormControlElement.h"
 #include "core/layout/LayoutImage.h"
 #include "core/layout/LayoutObject.h"
 #include "platform/DragImage.h"
 #include "platform/MIMETypeRegistry.h"
 #include "platform/clipboard/ClipboardMimeTypes.h"
 #include "platform/clipboard/ClipboardUtilities.h"
+#include "platform/network/NetworkUtils.h"
 #include <memory>
 
 namespace blink {
 
 static DragOperation convertEffectAllowedToDragOperation(const String& op) {
   // Values specified in http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#dom-datatransfer-effectallowed
   if (op == "uninitialized")
     return DragOperationEvery;
   if (op == "none")
     return DragOperationNone;
@@ skipping 213 matching lines @@
   if (!cachedImage || !cachedImage->getImage() || !cachedImage->isLoaded())
     return;
 
   RefPtr<SharedBuffer> imageBuffer = cachedImage->getImage()->data();
   if (!imageBuffer || !imageBuffer->size())
     return;
 
   String imageExtension = cachedImage->getImage()->filenameExtension();
   ASSERT(!imageExtension.isEmpty());
 
-  // Determine the filename for the file contents of the image.
-  String filename = cachedImage->response().suggestedFilename();
+  String filename = NetworkUtils::getSuggestedFilename(
+      url, cachedImage->response().httpHeaderField("content-disposition"));
   if (filename.isEmpty())
     filename = url.lastPathComponent();
 
   String fileExtension;
   if (filename.isEmpty()) {
     filename = element->getAttribute(HTMLNames::altAttr);
   } else {
     // Strip any existing extension. Assume that alt text is usually not a filename.
     int extensionIndex = filename.reverseFind('.');
     if (extensionIndex != -1) {
@@ skipping 207 matching lines @@
   }
 }
 
 DEFINE_TRACE(DataTransfer) {
   visitor->trace(m_dataObject);
   visitor->trace(m_dragImage);
   visitor->trace(m_dragImageElement);
 }
 
 }  // namespace blink