Don't populate WebDropData with file URLs when dragging files.

app/os_exchange_data_provider_win.cc

 // Copyright (c) 2009 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 "app/os_exchange_data_provider_win.h"
 
 #include "app/clipboard/clipboard_util_win.h"
 #include "app/l10n_util.h"
 #include "base/file_path.h"
 #include "base/i18n/file_util_icu.h"
@@ skipping 352 matching lines @@
       ClipboardUtil::GetTextHtmlFormat()->cfFormat, storage_plain));
 }
 
 bool OSExchangeDataProviderWin::GetString(std::wstring* data) const {
   return ClipboardUtil::GetPlainText(source_object_, data);
 }
 
 bool OSExchangeDataProviderWin::GetURLAndTitle(GURL* url,
                                                std::wstring* title) const {
   std::wstring url_str;
-  bool success = ClipboardUtil::GetUrl(source_object_, &url_str, title);
+  bool success = ClipboardUtil::GetUrl(source_object_, &url_str, title, true);
   if (success) {
     GURL test_url(url_str);
     if (test_url.is_valid()) {
       *url = test_url;
       return true;
     }
   } else if (GetPlainTextURL(source_object_, url)) {
     title->clear();
     return true;
   }
@@ skipping 527 matching lines @@
 // static
 OSExchangeData::Provider* OSExchangeData::CreateProvider() {
   return new OSExchangeDataProviderWin();
 }
 
 // static
 OSExchangeData::CustomFormat OSExchangeData::RegisterCustomFormat(
     const std::string& type) {
   return RegisterClipboardFormat(ASCIIToWide(type).c_str());
 }