Print Preview: Display a throbber when the user requests the system print

chrome/browser/automation/testing_automation_provider.cc

Index: chrome/browser/automation/testing_automation_provider.cc
diff --git a/chrome/browser/automation/testing_automation_provider.cc b/chrome/browser/automation/testing_automation_provider.cc
index abde4919d9358604cac327c1bcfa607f41ed08c1..2c0e32ffc530b828fef7b73f59c29c87e38c55bd 100644
--- a/chrome/browser/automation/testing_automation_provider.cc
+++ b/chrome/browser/automation/testing_automation_provider.cc
@@ -1476,7 +1476,7 @@ void TestingAutomationProvider::PrintNow(int tab_handle,
 
     TabContentsWrapper* wrapper =
         TabContentsWrapper::GetCurrentWrapperForContents(tab_contents);
-    if (!wrapper->print_view_manager()->PrintNow()) {
+    if (!wrapper->print_view_manager()->PrintNow(NULL)) {
       // Clean up the observer. It will send the reply message.
       delete observer;
     }