TabContents -> WebContentsImpl, part 20.

chrome/browser/printing/print_preview_message_handler.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 CHROME_BROWSER_PRINTING_PRINT_PREVIEW_MESSAGE_HANDLER_H_
 #define CHROME_BROWSER_PRINTING_PRINT_PREVIEW_MESSAGE_HANDLER_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "content/public/browser/web_contents_observer.h"
 
 class PrintPreviewUI;
 class TabContentsWrapper;
 struct PrintHostMsg_DidGetPreviewPageCount_Params;
 struct PrintHostMsg_DidPreviewDocument_Params;
 struct PrintHostMsg_DidPreviewPage_Params;
 
 namespace gfx {
 class Rect;
 }
 
 namespace printing {
 
 struct PageSizeMargins;
 
-// TabContents offloads print preview message handling to
+// TabContentsWrapper offloads print preview message handling to
 // PrintPreviewMessageHandler. This object has the same life time as the
-// TabContents that owns it.
+// TabContentsWrapper that owns it.
 class PrintPreviewMessageHandler : public content::WebContentsObserver {
  public:
   explicit PrintPreviewMessageHandler(content::WebContents* web_contents);
   virtual ~PrintPreviewMessageHandler();
 
   // content::WebContentsObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void NavigateToPendingEntry(const GURL& url,
       content::NavigationController::ReloadType reload_type) OVERRIDE;
 
@@ skipping 21 matching lines @@
   void OnPrintPreviewFailed(int document_cookie);
   void OnPrintPreviewCancelled(int document_cookie);
   void OnInvalidPrinterSettings(int document_cookie);
 
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewMessageHandler);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_PREVIEW_MESSAGE_HANDLER_H_