[ChromeOS] WebUILoginView returns true for IsPopupOrPanel.

chrome/browser/chromeos/login/webui_login_view.cc

Index: chrome/browser/chromeos/login/webui_login_view.cc
diff --git a/chrome/browser/chromeos/login/webui_login_view.cc b/chrome/browser/chromeos/login/webui_login_view.cc
index 47f573a099ad03230d2b7fa3935709ad54ac8a7a..86174ea0560489227cdfc5a6074895c003e7261e 100644
--- a/chrome/browser/chromeos/login/webui_login_view.cc
+++ b/chrome/browser/chromeos/login/webui_login_view.cc
@@ -248,6 +248,10 @@ bool WebUILoginView::HandleContextMenu(const ContextMenuParams& params) {
 #endif
 }
 
+bool WebUILoginView::IsPopupOrPanel(const TabContents* source) const {
+  return true;
+}
+
 bool WebUILoginView::TakeFocus(bool reverse) {
   // Forward the focus back to web contents.
   webui_login_->tab_contents()->FocusThroughTabTraversal(reverse);