Move more dnd related files to ui/base

chrome/browser/tab_contents/web_drop_target_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/tab_contents/web_drop_target_win.h"
 
 #include <windows.h>
 #include <shlobj.h>
 
 #include "chrome/browser/bookmarks/bookmark_node_data.h"
@@ skipping 64 matching lines @@
     return DROPEFFECT_NONE;
   }
 
  private:
   TabContents* tab_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(InterstitialDropTarget);
 };
 
 WebDropTarget::WebDropTarget(HWND source_hwnd, TabContents* tab_contents)
-    : app::win::DropTarget(source_hwnd),
+    : ui::DropTarget(source_hwnd),
       tab_contents_(tab_contents),
       current_rvh_(NULL),
       drag_cursor_(WebDragOperationNone),
       interstitial_drop_target_(new InterstitialDropTarget(tab_contents)) {
 }
 
 WebDropTarget::~WebDropTarget() {
 }
 
 DWORD WebDropTarget::OnDragEnter(IDataObject* data_object,
@@ skipping 117 matching lines @@
       tab_contents_->GetBookmarkDragDelegate()->OnDrop(bookmark_drag_data);
   }
 
   current_rvh_ = NULL;
 
   // This isn't always correct, but at least it's a close approximation.
   // For now, we always map a move to a copy to prevent potential data loss.
   DWORD drop_effect = web_drag_utils_win::WebDragOpToWinDragOp(drag_cursor_);
   return drop_effect != DROPEFFECT_MOVE ? drop_effect : DROPEFFECT_COPY;
 }