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

content/browser/renderer_host/render_view_host_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_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 148 matching lines @@
   virtual void DragSourceEndedAt(
       int client_x, int client_y, int screen_x, int screen_y,
       WebKit::WebDragOperation operation) OVERRIDE;
   virtual void DragSourceMovedTo(
       int client_x, int client_y, int screen_x, int screen_y) OVERRIDE;
   virtual void DragSourceSystemDragEnded() OVERRIDE;
   virtual void DragTargetDragEnter(
       const WebDropData& drop_data,
       const gfx::Point& client_pt,
       const gfx::Point& screen_pt,
-      WebKit::WebDragOperationsMask operations_allowed) OVERRIDE;
+      WebKit::WebDragOperationsMask operations_allowed,
+      int key_modifiers) OVERRIDE;
   virtual void DragTargetDragOver(
       const gfx::Point& client_pt,
       const gfx::Point& screen_pt,
-      WebKit::WebDragOperationsMask operations_allowed) OVERRIDE;
+      WebKit::WebDragOperationsMask operations_allowed,
+      int key_modifiers) OVERRIDE;
   virtual void DragTargetDragLeave() OVERRIDE;
   virtual void DragTargetDrop(const gfx::Point& client_pt,
-                              const gfx::Point& screen_pt) OVERRIDE;
+                              const gfx::Point& screen_pt,
+                              int key_modifiers) OVERRIDE;
   virtual void EnableAutoResize(const gfx::Size& min_size,
                                 const gfx::Size& max_size) OVERRIDE;
   virtual void DisableAutoResize(const gfx::Size& new_size) OVERRIDE;
   virtual void EnablePreferredSizeMode() OVERRIDE;
   virtual void ExecuteCustomContextMenuCommand(
       int action, const CustomContextMenuContext& context) OVERRIDE;
   virtual void ExecuteMediaPlayerActionAtLocation(
       const gfx::Point& location,
       const WebKit::WebMediaPlayerAction& action) OVERRIDE;
   virtual void ExecuteJavascriptInWebFrame(const string16& frame_xpath,
@@ skipping 454 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_