Don't populate URL data in WebDropData when dragging files.

ui/base/dragdrop/os_exchange_data_unittest.cc

 // Copyright 2013 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 "base/message_loop/message_loop.h"
 #include "base/pickle.h"
 #include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
@@ skipping 11 matching lines @@
   base::string16 input = base::ASCIIToUTF16("I can has cheezburger?");
   data.SetString(input);
 
   OSExchangeData data2(data.provider().Clone());
   base::string16 output;
   EXPECT_TRUE(data2.GetString(&output));
   EXPECT_EQ(input, output);
   std::string url_spec = "http://www.goats.com/";
   GURL url(url_spec);
   base::string16 title;
-  EXPECT_FALSE(data2.GetURLAndTitle(&url, &title));
+  EXPECT_FALSE(
+      data2.GetURLAndTitle(OSExchangeData::CONVERT_FILENAMES, &url, &title));
   // No URLs in |data|, so url should be untouched.
   EXPECT_EQ(url_spec, url.spec());
 }
 
 TEST_F(OSExchangeDataTest, TestURLExchangeFormats) {
   OSExchangeData data;
   std::string url_spec = "http://www.google.com/";
   GURL url(url_spec);
   base::string16 url_title = base::ASCIIToUTF16("www.google.com");
   data.SetURL(url, url_title);
   base::string16 output;
 
   OSExchangeData data2(data.provider().Clone());
 
   // URL spec and title should match
   GURL output_url;
   base::string16 output_title;
-  EXPECT_TRUE(data2.GetURLAndTitle(&output_url, &output_title));
+  EXPECT_TRUE(data2.GetURLAndTitle(
+      OSExchangeData::CONVERT_FILENAMES, &output_url, &output_title));
   EXPECT_EQ(url_spec, output_url.spec());
   EXPECT_EQ(url_title, output_title);
   base::string16 output_string;
 
   // URL should be the raw text response
   EXPECT_TRUE(data2.GetString(&output_string));
   EXPECT_EQ(url_spec, base::UTF16ToUTF8(output_string));
 }
 
 TEST_F(OSExchangeDataTest, TestPickledData) {
@@ skipping 28 matching lines @@
       "</BODY>\n</HTML>");
   data.SetHtml(html, url);
 
   OSExchangeData copy(data.provider().Clone());
   base::string16 read_html;
   EXPECT_TRUE(copy.GetHtml(&read_html, &url));
   EXPECT_EQ(html, read_html);
 }
 
 }  // namespace ui