Add media size capability to PDF printer.

chrome/browser/printing/print_job_manager.cc

Index: chrome/browser/printing/print_job_manager.cc
diff --git a/chrome/browser/printing/print_job_manager.cc b/chrome/browser/printing/print_job_manager.cc
index 9dc0c85404c17033a4f2a2de15e1febe766fc1d2..e43c052d80e02830ad3f2d1207cde1e809c73107 100644
--- a/chrome/browser/printing/print_job_manager.cc
+++ b/chrome/browser/printing/print_job_manager.cc
@@ -57,9 +57,18 @@ scoped_refptr<PrinterQuery> PrintQueriesQueue::CreatePrinterQuery() {
 }
 
 void PrintQueriesQueue::Shutdown() {
-  base::AutoLock lock(lock_);
-  queued_queries_.clear();
-  destination_ = NULL;
+  PrinterQueries queries_to_stop;
+  {
+    base::AutoLock lock(lock_);
+    queued_queries_.swap(queries_to_stop);
+    destination_ = NULL;
+  }
+  for (PrinterQueries::iterator itr = queries_to_stop.begin();
+       itr != queries_to_stop.end(); ++itr) {

[Vitaly Buka (NO REVIEWS), 2014/05/29 00:58:34]

iterating using for (size_t i = 0) is shorter

+    scoped_refptr<printing::PrinterQuery> query_to_stop(*itr);

[Vitaly Buka (NO REVIEWS), 2014/05/29 00:58:34]

you don't need temp var query_to_stop

+    query_to_stop->message_loop()->PostTask(
+        FROM_HERE, base::Bind(&PrinterQuery::StopWorker, query_to_stop));
+  }
 }
 
 PrintJobManager::PrintJobManager() : is_shutdown_(false) {