MacViews: Fix compilation.

chrome/browser/ui/views/extensions/extension_popup.cc

Index: chrome/browser/ui/views/extensions/extension_popup.cc
diff --git a/chrome/browser/ui/views/extensions/extension_popup.cc b/chrome/browser/ui/views/extensions/extension_popup.cc
index 9df37121ab4841037e4afd15bb4b6cc996e32627..ea937f9b79c889b4bdd003f492a2b3b073149e66 100644
--- a/chrome/browser/ui/views/extensions/extension_popup.cc
+++ b/chrome/browser/ui/views/extensions/extension_popup.cc
@@ -47,7 +47,7 @@ ExtensionPopup* ExtensionPopup::Create(extensions::ExtensionViewHost* host,
                                        views::View* anchor_view,
                                        views::BubbleBorder::Arrow arrow,
                                        ShowAction show_action) {
-  auto popup = new ExtensionPopup(host, anchor_view, arrow, show_action);
+  auto* popup = new ExtensionPopup(host, anchor_view, arrow, show_action);
   views::BubbleDialogDelegateView::CreateBubble(popup);
   return popup;
 }