Improvements in --debug-print switch implementation.

chrome/browser/printing/print_job.cc

Index: chrome/browser/printing/print_job.cc
diff --git a/chrome/browser/printing/print_job.cc b/chrome/browser/printing/print_job.cc
index 0171951e2b2bf66975b322b6bc932e81d07bf5e0..1af645957c1f1130cbbbac674c7cc27656de0bcb 100644
--- a/chrome/browser/printing/print_job.cc
+++ b/chrome/browser/printing/print_job.cc
@@ -12,6 +12,7 @@
 #include "base/timer/timer.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/printing/print_job_worker.h"
+#include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "printing/printed_document.h"
 #include "printing/printed_page.h"
@@ -68,8 +69,12 @@ void PrintJob::Initialize(PrintJobWorkerOwner* job,
   worker_.reset(job->DetachWorker(this));
   settings_ = job->settings();
 
-  PrintedDocument* new_doc =
-      new PrintedDocument(settings_, source_, job->cookie());
+  using content::BrowserThread;
+  PrintedDocument* new_doc = new PrintedDocument(
+      settings_,
+      source_,
+      job->cookie(),
+      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));

[Lei Zhang, 2014/06/11 21:43:42]

Can you use BrowserThread::GetBlockingPool() instead?

[Vitaly Buka (NO REVIEWS), 2014/06/11 22:22:58]

Done.

   new_doc->set_page_count(page_count);
   UpdatePrintedDocument(new_doc);