[Extensions Mac UI] Fix more bugs in the action overflow container

chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm

Index: chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm
diff --git a/chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm b/chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm
index a3b85aabc9254c7282b68eccaa942737841b80b7..f798711dafd65b227500eb82184d7de48dba5ac2 100644
--- a/chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm
+++ b/chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm
@@ -270,7 +270,8 @@ class ZoomLevelObserver {
   // The parent views each have a size of the full width of the menu, so we can
   // properly position the container.
   NSSize parentSize =
-      NSMakeSize([[self menu] size].width, preferredContainerSize.height());
+      NSMakeSize(preferredContainerSize.width() + kRightPadding + kLeftPadding,
+                 preferredContainerSize.height());
   [view setFrameSize:parentSize];
   [[containerView superview] setFrameSize:parentSize];