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

ui/base/dragdrop/os_exchange_data.h

 // 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.
 
 #ifndef UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_H_
 #define UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_H_
 
 #include "build/build_config.h"
 
 #include <set>
@@ skipping 50 matching lines @@
     FILE_NAME      = 1 << 2,
     PICKLED_DATA   = 1 << 3,
 #if defined(OS_WIN)
     FILE_CONTENTS  = 1 << 4,
 #endif
 #if defined(OS_WIN) || defined(USE_AURA)
     HTML           = 1 << 5,
 #endif
   };
 
+  enum FilenameToURLPolicy {
+    ConvertFilenames,

[sky, 2014/01/13 15:13:45]

Style guide says enum values should be ALL_CAPS (as Format is above). And you
need descriptions.

[dcheng, 2014/01/13 15:49:27]

Oops... I've been off in Blink a bit too long. Fixed.

+    DoNotConvertFilenames,
+  };
+
   // Encapsulates the info about a file to be downloaded.
   struct UI_BASE_EXPORT DownloadFileInfo {
     DownloadFileInfo(const base::FilePath& filename,
                      DownloadFileProvider* downloader);
     ~DownloadFileInfo();
 
     base::FilePath filename;
     scoped_refptr<DownloadFileProvider> downloader;
   };
 
@@ skipping 19 matching lines @@
 
     virtual void SetString(const base::string16& data) = 0;
     virtual void SetURL(const GURL& url, const base::string16& title) = 0;
     virtual void SetFilename(const base::FilePath& path) = 0;
     virtual void SetFilenames(
         const std::vector<FileInfo>& file_names) = 0;
     virtual void SetPickledData(const CustomFormat& format,
                                 const Pickle& data) = 0;
 
     virtual bool GetString(base::string16* data) const = 0;
-    virtual bool GetURLAndTitle(GURL* url, base::string16* title) const = 0;
+    virtual bool GetURLAndTitle(FilenameToURLPolicy policy,
+                                GURL* url,
+                                base::string16* title) const = 0;
     virtual bool GetFilename(base::FilePath* path) const = 0;
     virtual bool GetFilenames(
         std::vector<FileInfo>* file_names) const = 0;
     virtual bool GetPickledData(const CustomFormat& format,
                                 Pickle* data) const = 0;
 
     virtual bool HasString() const = 0;
     virtual bool HasURL() const = 0;
     virtual bool HasFile() const = 0;
     virtual bool HasCustomFormat(const CustomFormat& format) const = 0;
@@ skipping 55 matching lines @@
   void SetFilenames(
       const std::vector<FileInfo>& file_names);
   // Adds pickled data of the specified format.
   void SetPickledData(const CustomFormat& format, const Pickle& data);
 
   // These functions retrieve data of the specified type. If data exists, the
   // functions return and the result is in the out parameter. If the data does
   // not exist, the out parameter is not touched. The out parameter cannot be
   // NULL.
   bool GetString(base::string16* data) const;
-  bool GetURLAndTitle(GURL* url, base::string16* title) const;
+  bool GetURLAndTitle(FilenameToURLPolicy policy,
+                      GURL* url,
+                      base::string16* title) const;
   // Return the path of a file, if available.
   bool GetFilename(base::FilePath* path) const;
   bool GetFilenames(
       std::vector<FileInfo>* file_names) const;
   bool GetPickledData(const CustomFormat& format, Pickle* data) const;
 
   // Test whether or not data of certain types is present, without actually
   // returning anything.
   bool HasString() const;
   bool HasURL() const;
@@ skipping 33 matching lines @@
  private:
   // Provides the actual data.
   scoped_ptr<Provider> provider_;
 
   DISALLOW_COPY_AND_ASSIGN(OSExchangeData);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_H_