Added PrintingContext::Delegate to get parent view handle and application locale.

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 243 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
 
   scoped_refptr<printing::PrintBackend> print_backend(
       printing::PrintBackend::CreateInstance(NULL));
 
   std::string default_printer = print_backend->GetDefaultPrinterName();
   VLOG(1) << "Default Printer: " << default_printer;
   return default_printer;
 }
 
+class PrintingContextDelegate : public printing::PrintingContext::Delegate {
+ public:
+  // PrintingContext::Delegate methods.
+  virtual gfx::NativeView GetParentView() OVERRIDE { return NULL; }
+  virtual std::string GetAppLocale() OVERRIDE {
+    return g_browser_process->GetApplicationLocale();
+  }
+};
+
 gfx::Size GetDefaultPdfMediaSizeMicrons() {
+  PrintingContextDelegate delegate;
   scoped_ptr<printing::PrintingContext> printing_context(
-      printing::PrintingContext::Create(
-          g_browser_process->GetApplicationLocale()));
+      printing::PrintingContext::Create(&delegate));
   if (printing::PrintingContext::OK != printing_context->UsePdfSettings() ||
       printing_context->settings().device_units_per_inch() <= 0) {
     return gfx::Size();
   }
   gfx::Size pdf_media_size = printing_context->GetPdfPaperSizeDeviceUnits();
   float deviceMicronsPerDeviceUnit =
       (printing::kHundrethsMMPerInch * 10.0f) /
       printing_context->settings().device_units_per_inch();
   return gfx::Size(pdf_media_size.width() * deviceMicronsPerDeviceUnit,
                    pdf_media_size.height() * deviceMicronsPerDeviceUnit);
@@ skipping 1283 matching lines @@
 
 void PrintPreviewHandler::UnregisterForMergeSession() {
   if (reconcilor_)
     reconcilor_->RemoveMergeSessionObserver(this);
 }
 
 void PrintPreviewHandler::SetPdfSavedClosureForTesting(
     const base::Closure& closure) {
   pdf_file_saved_closure_ = closure;
 }