Move the core drag&drop code for Windows to content\browser to match Mac/GTK. I've had to add tempo…

content/browser/tab_contents/tab_contents_view_win.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_TAB_CONTENTS_TAB_CONTENTS_VIEW_WIN_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_WIN_H_
 #pragma once
 
 #include "content/browser/tab_contents/tab_contents_view_helper.h"
 #include "content/public/browser/web_contents_view.h"
 #include "ui/base/win/window_impl.h"
 
 class RenderWidgetHostViewWin;
 
 // An implementation of WebContentsView for Windows.
 class TabContentsViewWin : public content::WebContentsView,
                            public ui::WindowImpl {
  public:
-  // TODO(jam): make this take a WebContents once it's created from content.
+  // TODO(jam): make this take a TabContents once it's created from content.
   explicit TabContentsViewWin(content::WebContents* web_contents);
   virtual ~TabContentsViewWin();
 
   void SetParent(HWND parent);
 
   BEGIN_MSG_MAP_EX(TabContentsViewWin)
     MESSAGE_HANDLER(WM_WINDOWPOSCHANGED, OnWindowPosChanged)
   END_MSG_MAP()
 
   // Overridden from WebContentsView:
@@ skipping 66 matching lines @@
 
   RenderWidgetHostViewWin* view_;
 
   // Common implementations of some WebContentsView methods.
   TabContentsViewHelper tab_contents_view_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsViewWin);
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_WIN_H_