Start consolidating cross-port file selection code into ui/base/dialogs.

chrome/browser/download/save_package_file_picker.cc

Index: chrome/browser/download/save_package_file_picker.cc
diff --git a/chrome/browser/download/save_package_file_picker.cc b/chrome/browser/download/save_package_file_picker.cc
index cf502914f9eb5121c59d5dfa688a0d96b688b1f8..4fa8b49ca2cf8f958ad99d5a93eb3385c413b070 100644
--- a/chrome/browser/download/save_package_file_picker.cc
+++ b/chrome/browser/download/save_package_file_picker.cc
@@ -7,6 +7,7 @@
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
+#include "chrome/browser/chrome_select_file_policy.h"
 #include "chrome/browser/download/chrome_download_manager_delegate.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/platform_util.h"
@@ -157,16 +158,16 @@ SavePackageFilePicker::SavePackageFilePicker(
 
   if (g_should_prompt_for_filename) {
     select_file_dialog_ = SelectFileDialog::Create(this);
-    select_file_dialog_->SelectFile(SelectFileDialog::SELECT_SAVEAS_FILE,
-                                    string16(),
-                                    suggested_path,
-                                    &file_type_info,
-                                    file_type_index,
-                                    default_extension,
-                                    web_contents,
-                                    platform_util::GetTopLevel(
-                                        web_contents->GetNativeView()),
-                                    NULL);
+    select_file_dialog_->SelectFile(
+        SelectFileDialog::SELECT_SAVEAS_FILE,
+        string16(),
+        suggested_path,
+        &file_type_info,
+        file_type_index,
+        default_extension,
+        ChromeSelectFilePolicy::DisplayInfobarCallback(web_contents),
+        platform_util::GetTopLevel(web_contents->GetNativeView()),
+        NULL);
   } else {
     // Just use 'suggested_path' instead of opening the dialog prompt.
     // Go through FileSelected() for consistency.