Basic DragImage implementation....

chrome/browser/views/tab_contents/tab_contents_view_win.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/views/tab_contents/tab_contents_view_win.h"
 
 #include <windows.h>
 
 #include "app/gfx/canvas_paint.h"
 #include "app/os_exchange_data.h"
@@ skipping 107 matching lines @@
 
 gfx::NativeWindow TabContentsViewWin::GetTopLevelNativeWindow() const {
   return ::GetAncestor(GetNativeView(), GA_ROOT);
 }
 
 void TabContentsViewWin::GetContainerBounds(gfx::Rect* out) const {
   GetBounds(out, false);
 }
 
 void TabContentsViewWin::StartDragging(const WebDropData& drop_data,
-                                       WebDragOperationsMask ops) {
+                                       WebDragOperationsMask ops,
+                                       const SkBitmap& image,
+                                       const gfx::Point& image_offset) {
   drag_handler_ = new TabContentsDragWin(this);
+  // TODO(estade): make use of |image| and |image_offset|.
   drag_handler_->StartDragging(drop_data, ops);
 }
 
 void TabContentsViewWin::EndDragging() {
   if (close_tab_after_drag_ends_) {
     close_tab_timer_.Start(base::TimeDelta::FromMilliseconds(0), this,
                            &TabContentsViewWin::CloseTab);
   }
 
   if (tab_contents()->render_view_host())
@@ skipping 413 matching lines @@
   }
   return false;
 }
 
 void TabContentsViewWin::WheelZoom(int distance) {
   if (tab_contents()->delegate()) {
     bool zoom_in = distance > 0;
     tab_contents()->delegate()->ContentsZoomChange(zoom_in);
   }
 }