Get print preview intitiator before ClearInitiatorDetails().

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 <map>
 #include <string>
@@ skipping 816 matching lines @@
     ReportPrintSettingsStats(*settings);
 
     // This tries to activate the initiator as well, so do not clear the
     // association with the initiator yet.
     PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
         web_ui()->GetController());
     print_preview_ui->OnHidePreviewDialog();
 
     // Do this so the initiator can open a new print preview dialog, while the
     // current print preview dialog is still handling its print job.
+    WebContents* initiator = GetInitiator();
     ClearInitiatorDetails();
 
     // The PDF being printed contains only the pages that the user selected,
     // so ignore the page range and print all pages.
     settings->Remove(printing::kSettingPageRange, NULL);
     // Reset selection only flag for the same reason.
     settings->SetBoolean(printing::kSettingShouldPrintSelectionOnly, false);
 
     // Set ID to know whether printing is for preview.
     settings->SetInteger(printing::kPreviewUIID,
                          print_preview_ui->GetIDForPrintPreviewUI());
     RenderViewHost* rvh = preview_web_contents()->GetRenderViewHost();
     rvh->Send(new PrintMsg_PrintForPrintPreview(rvh->GetRoutingID(),
                                                 *settings));
 
     // For all other cases above, the preview dialog will stay open until the
     // printing has finished. Then the dialog closes and PrintPreviewDone() gets
     // called. In the case below, since the preview dialog will be hidden and
     // not closed, we need to make this call.
-    WebContents* initiator = GetInitiator();
     if (initiator) {
       printing::PrintViewManager* print_view_manager =
           printing::PrintViewManager::FromWebContents(initiator);
       print_view_manager->PrintPreviewDone();
     }
   }
 }
 
 void PrintPreviewHandler::PrintToPdf() {
   if (!print_to_pdf_path_.empty()) {
@@ skipping 689 matching lines @@
 
 void PrintPreviewHandler::UnregisterForMergeSession() {
   if (reconcilor_)
     reconcilor_->RemoveMergeSessionObserver(this);
 }
 
 void PrintPreviewHandler::SetPdfSavedClosureForTesting(
     const base::Closure& closure) {
   pdf_file_saved_closure_ = closure;
 }