PrintPreview: While printing the preview data, set the initiator tab title as print job name.

chrome/browser/printing/print_view_manager.h

Index: chrome/browser/printing/print_view_manager.h
diff --git a/chrome/browser/printing/print_view_manager.h b/chrome/browser/printing/print_view_manager.h
index afd551985794ecb8bf2efd9dadaa3ecaa77ed21e..df428fd9635ba7c6da693a0b40cdc35c4b080a4d 100644
--- a/chrome/browser/printing/print_view_manager.h
+++ b/chrome/browser/printing/print_view_manager.h
@@ -51,7 +51,9 @@ class PrintViewManager : public NotificationObserver,
   virtual void StopNavigation();
 
  private:
-  void OnDidGetPrintedPagesCount(int cookie, int number_pages);
+  void OnDidGetBasicPrintJobInfo(int cookie,
+                                 int number_pages,
+                                 const string16& job_title);
   void OnDidPrintPage(const PrintHostMsg_DidPrintPage_Params& params);
 
   // Processes a NOTIFY_PRINT_JOB_EVENT notification.
@@ -128,6 +130,14 @@ class PrintViewManager : public NotificationObserver,
   bool expecting_first_page_;
 #endif
 
+  // Current print job title.
+  // For preview printing, |job_title_| is set to initiator tab title in
+  // PrintHostMsg_DidGetBasicPrintJobInfo message handler.
+  // For normal printing, |job_title_| is empty. Print view manager will use
+  // the current tab title as print job title. If the current tab title is
+  // empty, use the default job title.
+  string16 job_title_;
+
   DISALLOW_COPY_AND_ASSIGN(PrintViewManager);
 };