Remove PrefObserver usage, batch 9.

chrome/browser/printing/print_view_manager.cc

 // 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.
 
 #include "chrome/browser/printing/print_view_manager.h"
 
 #include <map>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 62 matching lines @@
       print_preview_state_(NOT_PREVIEWING),
       scripted_print_preview_rph_(NULL),
       tab_content_blocked_(false) {
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   expecting_first_page_ = true;
 #endif
   registrar_.Add(this, chrome::NOTIFICATION_CONTENT_BLOCKED_STATE_CHANGED,
                  content::Source<content::WebContents>(web_contents));
   Profile* profile =
       Profile::FromBrowserContext(web_contents->GetBrowserContext());
-  printing_enabled_.Init(prefs::kPrintingEnabled,
-                         profile->GetPrefs(),
-                         this);
+  printing_enabled_.Init(
+      prefs::kPrintingEnabled,
+      profile->GetPrefs(),
+      base::Bind(&PrintViewManager::UpdateScriptedPrintingBlocked,
+                 base::Unretained(this)));
 }
 
 PrintViewManager::~PrintViewManager() {
   DCHECK_EQ(NOT_PREVIEWING, print_preview_state_);
   ReleasePrinterQuery();
   DisconnectFromCurrentPrintJob();
 }
 
 bool PrintViewManager::PrintNow() {
   return PrintNowInternal(new PrintMsg_PrintPages(routing_id()));
@@ skipping 291 matching lines @@
       UpdateScriptedPrintingBlocked();
       break;
     }
     default: {
       NOTREACHED();
       break;
     }
   }
 }
 
-void PrintViewManager::OnPreferenceChanged(PrefServiceBase* service,
-                                           const std::string& pref_name) {
-  UpdateScriptedPrintingBlocked();
-}
-
 void PrintViewManager::OnNotifyPrintJobEvent(
     const JobEventDetails& event_details) {
   switch (event_details.type()) {
     case JobEventDetails::FAILED: {
       TerminatePrintJob(true);
 
       content::NotificationService::current()->Notify(
           chrome::NOTIFICATION_PRINT_JOB_RELEASED,
           content::Source<content::WebContents>(web_contents()),
           content::NotificationService::NoDetails());
@@ skipping 265 matching lines @@
   scoped_refptr<printing::PrinterQuery> printer_query;
   print_job_manager->PopPrinterQuery(cookie, &printer_query);
   if (!printer_query.get())
     return;
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&PrinterQuery::StopWorker, printer_query.get()));
 }
 
 }  // namespace printing