Make gtk url picker and edit keyword view modal.

chrome/browser/gtk/options/url_picker_dialog_gtk.cc

Index: chrome/browser/gtk/options/url_picker_dialog_gtk.cc
diff --git a/chrome/browser/gtk/options/url_picker_dialog_gtk.cc b/chrome/browser/gtk/options/url_picker_dialog_gtk.cc
index 12de582698040c319deb8965ec94e94ab18ad249..6fa9a392e4d5e8b2505cd3ac4d0141c3d46f6e8e 100644
--- a/chrome/browser/gtk/options/url_picker_dialog_gtk.cc
+++ b/chrome/browser/gtk/options/url_picker_dialog_gtk.cc
@@ -28,8 +28,7 @@ UrlPickerDialogGtk::UrlPickerDialogGtk(UrlPickerCallback* callback,
   dialog_ = gtk_dialog_new_with_buttons(
       l10n_util::GetStringUTF8(IDS_ASI_ADD_TITLE).c_str(),
       parent,
-      // Non-modal.
-      GTK_DIALOG_NO_SEPARATOR,
+      static_cast<GtkDialogFlags>(GTK_DIALOG_MODAL | GTK_DIALOG_NO_SEPARATOR),
       GTK_STOCK_CANCEL,
       GTK_RESPONSE_CANCEL,
       NULL);