Plumb event flags (shift/alt/ctrl modifiers) for drag/drop events to WebKit.

content/renderer/render_view_impl.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 CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 #pragma once
 
 #include <deque>
 #include <map>
@@ skipping 824 matching lines @@
   void OnDeterminePageLanguage();
   void OnDisableScrollbarsForSmallWindows(
       const gfx::Size& disable_scrollbars_size_limit);
   void OnDisassociateFromPopupCount();
   void OnDragSourceEndedOrMoved(const gfx::Point& client_point,
                                 const gfx::Point& screen_point,
                                 bool ended,
                                 WebKit::WebDragOperation drag_operation);
   void OnDragSourceSystemDragEnded();
   void OnDragTargetDrop(const gfx::Point& client_pt,
-                        const gfx::Point& screen_pt);
+                        const gfx::Point& screen_pt,
+                        int key_modifiers);
   void OnDragTargetDragEnter(const WebDropData& drop_data,
                              const gfx::Point& client_pt,
                              const gfx::Point& screen_pt,
-                             WebKit::WebDragOperationsMask operations_allowed);
+                             WebKit::WebDragOperationsMask operations_allowed,
+                             int key_modifiers);
   void OnDragTargetDragLeave();
   void OnDragTargetDragOver(const gfx::Point& client_pt,
                             const gfx::Point& screen_pt,
-                            WebKit::WebDragOperationsMask operations_allowed);
+                            WebKit::WebDragOperationsMask operations_allowed,
+                            int key_modifiers);
   void OnEnablePreferredSizeChangedMode();
   void OnEnableAutoResize(const gfx::Size& min_size, const gfx::Size& max_size);
   void OnDisableAutoResize(const gfx::Size& new_size);
   void OnEnumerateDirectoryResponse(int id, const std::vector<FilePath>& paths);
   void OnExecuteEditCommand(const std::string& name, const std::string& value);
   void OnFileChooserResponse(
       const std::vector<content::SelectedFileInfo>& files);
   void OnFind(int request_id, const string16&, const WebKit::WebFindOptions&);
   void OnFindReplyAck();
   void OnGetAllSavableResourceLinksForCurrentPage(const GURL& page_url);
@@ skipping 489 matching lines @@
   // bunch of stuff, you should probably create a helper class and put your
   // data and methods on that to avoid bloating RenderView more.  You can
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_