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

content/public/browser/render_view_host.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_PUBLIC_BROWSER_RENDER_VIEW_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_H_
 #pragma once
 
 #include "base/values.h"
 #include "content/common/content_export.h"
@@ skipping 104 matching lines @@
 
   // Notifies the renderer that we're done with the drag and drop operation.
   // This allows the renderer to reset some state.
   virtual void DragSourceSystemDragEnded() = 0;
 
   // D&d drop target messages that get sent to WebKit.
   virtual void DragTargetDragEnter(
       const WebDropData& drop_data,
       const gfx::Point& client_pt,
       const gfx::Point& screen_pt,
-      WebKit::WebDragOperationsMask operations_allowed) = 0;
+      WebKit::WebDragOperationsMask operations_allowed,
+      int key_modifiers) = 0;
   virtual void DragTargetDragOver(
       const gfx::Point& client_pt,
       const gfx::Point& screen_pt,
-      WebKit::WebDragOperationsMask operations_allowed) = 0;
+      WebKit::WebDragOperationsMask operations_allowed,
+      int key_modifiers) = 0;
   virtual void DragTargetDragLeave() = 0;
   virtual void DragTargetDrop(const gfx::Point& client_pt,
-                              const gfx::Point& screen_pt) = 0;
+                              const gfx::Point& screen_pt,
+                              int key_modifiers) = 0;
 
   // Instructs the RenderView to automatically resize and send back updates
   // for the new size.
   virtual void EnableAutoResize(const gfx::Size& min_size,
                                 const gfx::Size& max_size) = 0;
 
   // Turns off auto-resize and gives a new size that the view should be.
   virtual void DisableAutoResize(const gfx::Size& new_size) = 0;
 
   // Instructs the RenderView to send back updates to the preferred size.
@@ skipping 106 matching lines @@
   virtual void ToggleSpeechInput() = 0;
 
   // Passes a list of Webkit preferences to the renderer.
   virtual void UpdateWebkitPreferences(
       const webkit_glue::WebPreferences& prefs) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_H_