Make the cancelling of drag and drop match Safari for Windows.

chrome/renderer/render_view.h

 // 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.
 
 #ifndef CHROME_RENDERER_RENDER_VIEW_H_
 #define CHROME_RENDERER_RENDER_VIEW_H_
 
 #include <string>
 #include <queue>
 #include <vector>
@@ skipping 506 matching lines @@
                            const std::wstring& jscript);
   void OnCSSInsertRequest(const std::wstring& frame_xpath,
                           const std::string& css);
   void OnAddMessageToConsole(const string16& frame_xpath,
                              const string16& message,
                              const WebKit::WebConsoleMessage::Level&);
   void OnReservePageIDRange(int size_of_range);
 
   void OnDragSourceEndedOrMoved(const gfx::Point& client_point,
                                 const gfx::Point& screen_point,
-                                bool ended);
+                                bool ended, bool cancelled);
   void OnDragSourceSystemDragEnded();
   void OnInstallMissingPlugin();
   void OnFileChooserResponse(const std::vector<FilePath>& file_names);
   void OnEnableViewSourceMode();
   void OnEnableIntrinsicWidthChangedMode();
   void OnSetRendererPrefs(const RendererPreferences& renderer_prefs);
   void OnUpdateBackForwardListCount(int back_list_count,
                                     int forward_list_count);
   void OnGetAccessibilityInfo(
       const webkit_glue::WebAccessibility::InParams& in_params,
@@ skipping 254 matching lines @@
   // PrintWebViewHelper handles printing.  Note that this object is constructed
   // when printing for the first time but only destroyed with the RenderView.
   scoped_ptr<PrintWebViewHelper> print_helper_;
 
   RendererPreferences renderer_preferences_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderView);
 };
 
 #endif  // CHROME_RENDERER_RENDER_VIEW_H_