Revert 137558 - Revert 136935 - Sometimes data is NULL. I am not sure if it's...

Revert 137558 - Revert 136935 - Sometimes data is NULL. I am not sure if it's correct behavior , but it's safe just to check pointer.

Reverted by mistake instead of branch.

BUG=127865


Review URL: https://chromiumcodereview.appspot.com/10386106

TBR=vitalybuka@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10383225

TBR=vitalybuka@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10389186

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@137567 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/webui/print_preview/print_preview_handler.cc

@@ -715,7 +715,7 @@ void PrintPreviewHandler::SendCloudPrintJob(const DictionaryValue& settings,
       web_ui()->GetController());
   print_preview_ui->GetPrintPreviewDataForIndex(
       printing::COMPLETE_PREVIEW_DOCUMENT_INDEX, &data);
-  if (data->size() > 0U && data->front()) {
+  if (data.get() && data->size() > 0U && data->front()) {
     string16 print_job_title_utf16 =
         preview_tab_wrapper()->print_view_manager()->RenderSourceName();
     std::string print_job_title = UTF16ToUTF8(print_job_title_utf16);
@@ -841,12 +841,14 @@ void PrintPreviewHandler::FileSelected(const FilePath& path,
   print_preview_ui->GetPrintPreviewDataForIndex(
       printing::COMPLETE_PREVIEW_DOCUMENT_INDEX, &data);
   print_to_pdf_path_.reset(new FilePath(path));
-  if (data.get())
   PostPrintToPdfTask(data);
 }
 
-void PrintPreviewHandler::PostPrintToPdfTask(
-    scoped_refptr<base::RefCountedBytes> data) {
+void PrintPreviewHandler::PostPrintToPdfTask(base::RefCountedBytes* data) {
+  if (!data) {
+    NOTREACHED();
+    return;
+  }
   printing::PreviewMetafile* metafile = new printing::PreviewMetafile;
   metafile->InitFromData(static_cast<const void*>(data->front()), data->size());
   // PrintToPdfCallback takes ownership of |metafile|.

chrome/browser/ui/webui/print_preview/print_preview_handler.h

@@ -176,7 +176,7 @@ class PrintPreviewHandler : public content::WebUIMessageHandler,
   void ClearInitiatorTabDetails();
 
   // Posts a task to save |data| to pdf at |print_to_pdf_path_|.
-  void PostPrintToPdfTask(scoped_refptr<base::RefCountedBytes> data);
+  void PostPrintToPdfTask(base::RefCountedBytes* data);
 
   // Populates |settings| according to the current locale.
   void GetNumberFormatAndMeasurementSystem(base::DictionaryValue* settings);