Merge 153342 - Print preview: Use an ID instead of memory pointer string in WebUI.

chrome/browser/ui/webui/print_preview/print_preview_handler.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/ui/webui/print_preview/print_preview_handler.h"
 
 #include <ctype.h>
 
 #include <string>
 #include <vector>
@@ skipping 325 matching lines @@
   int request_id = -1;
   if (!settings->GetInteger(printing::kPreviewRequestID, &request_id))
     return;
 
   PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
       web_ui()->GetController());
   print_preview_ui->OnPrintPreviewRequest(request_id);
   // Add an additional key in order to identify |print_preview_ui| later on
   // when calling PrintPreviewUI::GetCurrentPrintPreviewStatus() on the IO
   // thread.
-  settings->SetString(printing::kPreviewUIAddr,
-                      print_preview_ui->GetPrintPreviewUIAddress());
+  settings->SetInteger(printing::kPreviewUIID,
+                       print_preview_ui->GetIDForPrintPreviewUI());
 
   // Increment request count.
   ++regenerate_preview_request_count_;
 
   TabContents* initiator_tab = GetInitiatorTab();
   if (!initiator_tab) {
     ReportUserActionHistogram(INITIATOR_TAB_CLOSED);
     print_preview_ui->OnClosePrintPreviewTab();
     return;
   }
@@ skipping 611 matching lines @@
     return;
 
   // We no longer require the initiator tab details. Remove those details
   // associated with the preview tab to allow the initiator tab to create
   // another preview tab.
   printing::PrintPreviewTabController* tab_controller =
       printing::PrintPreviewTabController::GetInstance();
   if (tab_controller)
     tab_controller->EraseInitiatorTabInfo(preview_tab_contents());
 }