Print Preview: Create Save As PDF directory if it does not exist.

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

Index: chrome/browser/ui/webui/print_preview/print_preview_handler.h
diff --git a/chrome/browser/ui/webui/print_preview/print_preview_handler.h b/chrome/browser/ui/webui/print_preview/print_preview_handler.h
index f18848109b4f4ab42bbecf5d9e9d774ff9ceca67..ee4e1fe570579e5ab57635c927df13e330f23b0d 100644
--- a/chrome/browser/ui/webui/print_preview/print_preview_handler.h
+++ b/chrome/browser/ui/webui/print_preview/print_preview_handler.h
@@ -107,8 +107,10 @@ class PrintPreviewHandler
   void SetPdfSavedClosureForTesting(const base::Closure& closure);
 
  protected:
-  // If |prompt_user| is true, displays a modal dialog, prompting the user to
-  // select a file. Otherwise, just accept |default_path| and uniquify it.
+  // If |prompt_user| is true, starts a task to create the default Save As PDF
+  // directory if needed. |OnDirectoryCreated| will be called when this

[Lei Zhang, 2017/06/22 01:39:56]

nit: OnDirectoryCreated() is not a variable.

s/this/it/

[rbpotter, 2017/06/22 19:57:26]

Done.

+  // finishes to open the modal dialog and prompt the user. Otherwise, just
+  // accept |default_path| and uniquify it.
   // Protected so unit tests can access.
   virtual void SelectFile(const base::FilePath& default_path, bool prompt_user);
 
@@ -262,6 +264,10 @@ class PrintPreviewHandler
   // Clears initiator details for the print preview dialog.
   void ClearInitiatorDetails();
 
+  // Called when the directory to save to has been created. Opens a modal
+  // dialog to prompt the user to select the file for Save As PDF.
+  void OnDirectoryCreated(base::FilePath path);

[Lei Zhang, 2017/06/22 01:39:56]

Pass by const ref.

[rbpotter, 2017/06/22 19:57:26]

Done.

+
   // Posts a task to save |data| to pdf at |print_to_pdf_path_|.
   void PostPrintToPdfTask();