Use document from preview for System Dialog printing on Windows.

chrome/browser/printing/print_job_worker.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_job_worker.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
@@ skipping 96 matching lines @@
   } else {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         base::Bind(&HoldRefCallback, make_scoped_refptr(owner_),
                    base::Bind(&PrintJobWorker::UseDefaultSettings,
                               base::Unretained(this))));
   }
 }
 
 void PrintJobWorker::SetSettings(
-    const base::DictionaryValue* const new_settings) {
+    scoped_ptr<PrintingUIWebContentsObserver> web_contents_observer,
+    scoped_ptr<base::DictionaryValue> new_settings) {
   DCHECK(task_runner_->RunsTasksOnCurrentThread());
 
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&HoldRefCallback,
                  make_scoped_refptr(owner_),
                  base::Bind(&PrintJobWorker::UpdatePrintSettings,
                             base::Unretained(this),
-                            base::Owned(new_settings))));
+                            base::Passed(&web_contents_observer),
+                            base::Passed(&new_settings))));
 }
 
 void PrintJobWorker::UpdatePrintSettings(
-    const base::DictionaryValue* const new_settings) {
-  PrintingContext::Result result =
-      printing_context_->UpdatePrintSettings(*new_settings);
+    scoped_ptr<PrintingUIWebContentsObserver> web_contents_observer,
+    scoped_ptr<base::DictionaryValue> new_settings) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  PrintingContext::Result result = printing_context_->UpdatePrintSettings(
+      *new_settings,
+      web_contents_observer ? web_contents_observer->GetParentView() : NULL);
   GetSettingsDone(result);
 }
 
 void PrintJobWorker::GetSettingsDone(PrintingContext::Result result) {
   // Most PrintingContext functions may start a message loop and process
   // message recursively, so disable recursive task processing.
   // TODO(thestig): See above comment. SetNestableTasksAllowed(false) needs to
   // be called on the same thread as the previous call.  See
   // http://crbug.com/73466
   // MessageLoop::current()->SetNestableTasksAllowed(false);
@@ skipping 245 matching lines @@
                               document_,
                               scoped_refptr<PrintedPage>()));
   Cancel();
 
   // Makes sure the variables are reinitialized.
   document_ = NULL;
   page_number_ = PageNumber::npos();
 }
 
 }  // namespace printing