Clean up TCW, make it solely a hub for 1:1 observer/helper objects.

chrome/browser/ui/gtk/tabs/drag_data.cc

 // Copyright (c) 2011 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/ui/gtk/tabs/drag_data.h"
 
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/gtk/tabs/tab_gtk.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
+#include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/tab_contents/tab_contents_delegate.h"
 
 DraggedTabData::DraggedTabData()
     : tab_(NULL),
       contents_(NULL),
       original_delegate_(NULL),
       source_model_index_(-1),
       pinned_(false),
       mini_(false) {
 }
@@ skipping 76 matching lines @@
   return GetSourceTabData()->contents_;
 }
 
 TabContents* DragData::GetSourceTabContents() {
   return GetSourceTabData()->contents_->tab_contents();
 }
 
 DraggedTabData* DragData::GetSourceTabData() {
   return get(source_tab_index_);
 }