Download filename determination refactor (3/3)

chrome/browser/download/download_file_picker.h

Index: chrome/browser/download/download_file_picker.h
diff --git a/chrome/browser/download/download_file_picker.h b/chrome/browser/download/download_file_picker.h
index d6bf0c30684a8bcd2c0ea0c398c8bbe0ad06e032..1f79619e401352f5a070e665410cb9a8f1c85973 100644
--- a/chrome/browser/download/download_file_picker.h
+++ b/chrome/browser/download/download_file_picker.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_FILE_PICKER_H_
 #pragma once
 
+#include "base/callback.h"
 #include "chrome/browser/ui/select_file_dialog.h"
 
 class FilePath;
@@ -19,19 +20,29 @@ class WebContents;
 // Handles showing a dialog to the user to ask for the filename for a download.
 class DownloadFilePicker : public SelectFileDialog::Listener {
  public:
+  // Callback invoked when the user chooses a download path. If the user cancels
+  // the operation, |selected_path| will be empty.
+  typedef base::Callback<void(const FilePath& selected_path)>
+      FileSelectedCallback;
+
   DownloadFilePicker();
   virtual ~DownloadFilePicker();
 
   void Init(content::DownloadManager* download_manager,
-            content::DownloadItem* item);
+            content::DownloadItem* item,
+            const FilePath& suggested_path,
+            const FileSelectedCallback& callback);
 
  protected:
   // On ChromeOS, DownloadItem::GetTargetPath is a temporary local filename.
-  virtual void InitSuggestedPath(content::DownloadItem* item);
+  virtual void InitSuggestedPath(content::DownloadItem* item,
+                                 const FilePath& suggested_path);
   void set_suggested_path(const FilePath& suggested_path) {
     suggested_path_ = suggested_path;
   }
 
+  void OnFileSelected(const FilePath& path);
+
   void RecordFileSelected(const FilePath& path);
 
   scoped_refptr<content::DownloadManager> download_manager_;
@@ -46,6 +57,8 @@ class DownloadFilePicker : public SelectFileDialog::Listener {
 
   FilePath suggested_path_;
 
+  FileSelectedCallback file_selected_callback_;
+
   // For managing select file dialogs.
   scoped_refptr<SelectFileDialog> select_file_dialog_;