Cleanup: Stop creating RenderViewObservers from chrome/ in RenderViewer.

chrome/renderer/print_web_view_helper.h

 // 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.
 
 #ifndef CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #define CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "base/shared_memory.h"
 #include "base/time.h"
 #include "content/renderer/render_view_observer.h"
+#include "content/renderer/render_view_observer_tracker.h"
 #include "printing/native_metafile.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrameClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebViewClient.h"
 #include "ui/gfx/size.h"
 
 class DictionaryValue;
 struct PrintMsg_Print_Params;
 struct PrintMsg_PrintPage_Params;
 struct PrintMsg_PrintPages_Params;
 
@@ skipping 39 matching lines @@
   bool use_browser_overlays_;
 
   DISALLOW_COPY_AND_ASSIGN(PrepareFrameAndViewForPrint);
 };
 
 
 // PrintWebViewHelper handles most of the printing grunt work for RenderView.
 // We plan on making print asynchronous and that will require copying the DOM
 // of the document and creating a new WebView with the contents.
 class PrintWebViewHelper : public RenderViewObserver ,
+                           public RenderViewObserverTracker<PrintWebViewHelper>,
                            public WebKit::WebViewClient,
                            public WebKit::WebFrameClient {
  public:
   explicit PrintWebViewHelper(RenderView* render_view);
   virtual ~PrintWebViewHelper();
 
-  // Prints |frame| which called window.print().
-  void ScriptInitiatedPrint(WebKit::WebFrame* frame);
-
  protected:
   // WebKit::WebViewClient override:
   virtual void didStopLoading();
 
  private:
   FRIEND_TEST_ALL_PREFIXES(RenderViewTest, BlockScriptInitiatedPrinting);
   FRIEND_TEST_ALL_PREFIXES(RenderViewTest, OnPrintPages);
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
   FRIEND_TEST_ALL_PREFIXES(RenderViewTest, PrintLayoutTest);
   FRIEND_TEST_ALL_PREFIXES(RenderViewTest, PrintWithIframe);
 #endif  // defined(OS_WIN) || defined(OS_MACOSX)
 
   // RenderViewObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message);
+  virtual void printPage(WebKit::WebFrame* frame);
 
   // Message handlers ---------------------------------------------------------
 
   // Print the document.
   void OnPrintPages();
 
   // Generate a print preview using |settings|.
   void OnPrintPreview(const DictionaryValue& settings);
 
   // Print / preview the node under the context menu.
@@ skipping 132 matching lines @@
 
   scoped_ptr<PrintMsg_PrintPages_Params> print_pages_params_;
   base::Time last_cancelled_script_print_;
   int user_cancelled_scripted_print_count_;
   bool is_preview_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 #endif  // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_