Merge 117361 - Print Preview: Handle a CHECK that's getting hit in PrintPreviewHandler::HandlePri...

print_preview_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/print_preview_handler.h"
 
 #include <ctype.h>
 
 #include <string>
 #include <vector>
@@ skipping 331 matching lines @@
 
 void PrintPreviewHandler::HandlePrint(const ListValue* args) {
   ReportStats();
 
   // Record the number of times the user requests to regenerate preview data
   // before printing.
   UMA_HISTOGRAM_COUNTS("PrintPreview.RegeneratePreviewRequest.BeforePrint",
                        regenerate_preview_request_count_);
 
   TabContentsWrapper* initiator_tab = GetInitiatorTab();
-  CHECK(initiator_tab);
-
-  RenderViewHost* init_rvh = initiator_tab->render_view_host();
-  init_rvh->Send(new PrintMsg_ResetScriptedPrintCount(init_rvh->routing_id()));
+  if (initiator_tab) {
+    RenderViewHost* rvh = initiator_tab->render_view_host();
+    rvh->Send(new PrintMsg_ResetScriptedPrintCount(rvh->routing_id()));
+  }
 
   scoped_ptr<DictionaryValue> settings(GetSettingsDictionary(args));
   if (!settings.get())
     return;
 
   // Storing last used color model.
   int color_model;
   if (!settings->GetInteger(printing::kSettingColor, &color_model))
     color_model = printing::GRAY;
   last_used_color_model_ = static_cast<printing::ColorModels>(color_model);
@@ skipping 47 matching lines @@
 
     // Do this so the initiator tab can open a new print preview tab.
     ClearInitiatorTabDetails();
 
     // 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);
     RenderViewHost* rvh = web_ui_->tab_contents()->render_view_host();
     rvh->Send(new PrintMsg_PrintForPrintPreview(rvh->routing_id(), *settings));
   }
-  initiator_tab->print_view_manager()->PrintPreviewDone();
+  if (initiator_tab)
+    initiator_tab->print_view_manager()->PrintPreviewDone();
 }
 
 void PrintPreviewHandler::HandlePrintToPdf(
     const base::DictionaryValue& settings) {
   if (print_to_pdf_path_.get()) {
     // User has already selected a path, no need to show the dialog again.
     PostPrintToPdfTask();
   } else if (!select_file_dialog_.get() || !select_file_dialog_->IsRunning(
         platform_util::GetTopLevel(preview_tab()->GetNativeView()))) {
     ReportUserActionHistogram(PRINT_TO_PDF);
@@ skipping 403 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_wrapper());
 }