Only generate suggested filenames when actually dragging an image.

content/renderer/render_widget.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_widget.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 219 matching lines @@
   result.setItems(item_list);
   return result;
 }
 
 WebDragData DropDataToWebDragData(const DropData& drop_data) {
   std::vector<WebDragData::Item> item_list;
 
   // These fields are currently unused when dragging into WebKit.
   DCHECK(drop_data.download_metadata.empty());
   DCHECK(drop_data.file_contents.empty());
-  DCHECK(drop_data.file_description_filename.empty());
+  DCHECK(drop_data.file_contents_content_disposition.empty());
 
   if (!drop_data.text.is_null()) {
     WebDragData::Item item;
     item.storageType = WebDragData::Item::StorageTypeString;
     item.stringType = WebString::fromUTF8(ui::Clipboard::kMimeTypeText);
     item.stringData = WebString::fromUTF16(drop_data.text.string());
     item_list.push_back(item);
   }
 
   if (!drop_data.url.is_empty()) {
@@ skipping 2042 matching lines @@
     // browser side (https://crbug.com/669219).
     // If there is no WebFrameWidget, then there will be no
     // InputMethodControllers for a WebLocalFrame.
     return nullptr;
   }
   return static_cast<blink::WebFrameWidget*>(GetWebWidget())
       ->getActiveWebInputMethodController();
 }
 
 }  // namespace content