Update the child process security policy to use explicit permission grants.

chrome/browser/file_select_helper.h

Index: chrome/browser/file_select_helper.h
diff --git a/chrome/browser/file_select_helper.h b/chrome/browser/file_select_helper.h
index 89f769f7cd69c0b6660faa6c76c759dc39cc22b3..0c2c9b41e970280aea4f2880887b30a8a422b78b 100644
--- a/chrome/browser/file_select_helper.h
+++ b/chrome/browser/file_select_helper.h
@@ -12,6 +12,7 @@
 #include "base/gtest_prod_util.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+#include "content/public/common/file_chooser_params.h"
 #include "net/base/directory_lister.h"
 #include "ui/shell_dialogs/select_file_dialog.h"
 
@@ -20,7 +21,6 @@ class Profile;
 namespace content {
 class RenderViewHost;
 class WebContents;
-struct FileChooserParams;
 }
 
 namespace ui {
@@ -148,6 +148,9 @@ class FileSelectHelper
   // The type of file dialog last shown.
   ui::SelectFileDialog::Type dialog_type_;
 
+  // The mode of file dialog last shown.
+  content::FileChooserParams::Mode dialog_mode_;
+
   // Maintain a list of active directory enumerations.  These could come from
   // the file select dialog or from drag-and-drop of directories, so there could
   // be more than one going on at a time.